Orthopedic With Answer Sport Review | Dr Hutaif Sports - ...

Question 1

A 24-year-old professional soccer player undergoes ACL reconstruction. During arthroscopy, the surgeon evaluates the posterior compartments using a 70-degree arthroscope through the intercondylar notch. A longitudinal tear at the meniscocapsular junction of the posterior horn of the medial meniscus is identified. This lesion was not clearly visualized on the standard sagittal MRI sequences. What is the most likely biomechanical consequence if this lesion is left untreated?

Explanation

The clinical scenario describes a 'ramp lesion', which is a hidden lesion of the posterior horn of the medial meniscus (meniscocapsular junction) commonly associated with ACL tears. If left untreated, ramp lesions significantly increase anterior tibial translation and rotatory instability, leading to higher forces on the ACL graft and an increased risk of graft failure. Unlike root tears, ramp lesions do not completely disrupt the meniscal hoop stresses, so they are not biomechanically equivalent to a total meniscectomy.

Question 2

A 19-year-old female presents with recurrent lateral patellar instability. Imaging reveals a TT-TG distance of 14 mm, normal patellar height, and no significant trochlear dysplasia. She is scheduled for an isolated Medial Patellofemoral Ligament (MPFL) reconstruction. Which of the following best describes the correct anatomic femoral attachment site for the MPFL graft?

Explanation

The anatomic femoral origin of the MPFL is located in a saddle-like depression between the adductor tubercle (which is proximal) and the medial epicondyle (which is distal). Radiographically, this is identified using the Schöttle point, located approximately 1 mm anterior to the posterior femoral cortical line, 2.5 mm distal to the posterior articular border, and proximal to the level of the posterior medial epicondyle.

Question 3

A 22-year-old rugby player presents with recurrent anterior shoulder dislocations. CT imaging demonstrates 25% anterior glenoid bone loss. A Latarjet procedure is planned. Which of the following provides the primary mechanism of stabilization in the Latarjet procedure at 90 degrees of abduction and external rotation?

Explanation

The Latarjet procedure relies on a 'triple blocking' effect. The sling effect of the conjoint tendon (and subscapularis) acting as a dynamic buttress across the anterior-inferior capsule is the primary stabilizer in the vulnerable abducted/externally rotated position, accounting for 50-70% of the restored stability. The bony block and capsular repair provide the remaining stability.

Question 4

A 62-year-old male presents with a massive, irreparable posterosuperior rotator cuff tear. He has profound weakness in external rotation and a positive external rotation lag sign. His subscapularis is fully intact, and he has active forward elevation to 130 degrees. Which of the following tendon transfers is most classically indicated for this specific pattern of deficit?

Explanation

A latissimus dorsi tendon transfer is classically indicated for younger or active patients with a massive, irreparable posterosuperior rotator cuff tear (supraspinatus and infraspinatus) who have loss of active external rotation but an intact subscapularis and preserved deltoid function. Lower trapezius transfer is also an option, but among the choices, latissimus dorsi transfer is the classic, established procedure for this defect.

Question 5

A 21-year-old collegiate baseball pitcher undergoes ulnar collateral ligament (UCL) reconstruction using a palmaris longus autograft. To restore the primary restraint to valgus stress of the elbow between 30 and 120 degrees of flexion, the graft must appropriately reconstruct the anterior bundle. What is the anatomic ulnar insertion of the anterior bundle of the UCL?

Explanation

The anterior bundle of the UCL is the primary restraint to valgus stress at the elbow between 30 and 120 degrees of flexion. It originates on the anterior undersurface of the medial epicondyle and inserts on the sublime tubercle, which is located on the anteromedial aspect of the coronoid process.

Question 6

A 25-year-old ice hockey player is diagnosed with Femoroacetabular Impingement (FAI). Radiographs and MRI demonstrate a prominent Cam lesion with an alpha angle of 68 degrees. In this patient, where is the acetabular cartilage delamination most likely to be located?

Explanation

Cam-type femoroacetabular impingement is caused by an aspherical femoral head-neck junction (high alpha angle) that forcefully enters the acetabulum during flexion and internal rotation. This creates shear forces that classically cause chondral delamination and labral tears in the anterosuperior quadrant of the acetabulum (from 1 to 3 o'clock position).

Question 7

A 28-year-old skier sustains an isolated complete posterior cruciate ligament (PCL) injury. The PCL consists of two distinct functional bundles. Which statement accurately describes the biomechanics of the PCL bundles?

Explanation

The PCL is composed of two main bundles: the anterolateral (AL) and the posteromedial (PM). The AL bundle is the larger and stiffer of the two, and it is tight in flexion. The PM bundle is smaller and is tightest in extension.

Question 8

A 30-year-old male suffers a high-energy multiligamentous knee injury (Schenck KD-III). Upon arrival at the emergency department, his knee is grossly reduced but severely swollen. His Ankle-Brachial Index (ABI) is 0.85, and his distal pulses are palpable but asymmetric. What is the most appropriate next step in management?

Explanation

In the setting of a knee dislocation or suspected multiligament knee injury, an ABI < 0.9 is highly indicative of an arterial injury (usually popliteal intimal tear), even if distal pulses are palpable. This mandates further vascular imaging, most commonly a CT angiogram, or immediate vascular surgery consultation if hard signs of ischemia are present. Observation is inappropriate.

Question 9

A 45-year-old construction worker presents with chronic anterior shoulder pain and popping. MRI arthrogram reveals a Type II SLAP tear. Non-operative management has failed. Based on current evidence, which surgical intervention provides the most reliable return to work and clinical outcomes for this specific patient profile?

Explanation

In patients older than 40 years, particularly manual laborers or those with degenerative SLAP tears, biceps tenodesis has consistently shown superior clinical outcomes, lower complication rates, and a more reliable return to work compared to arthroscopic SLAP repair, which carries a high risk of postoperative stiffness and persistent pain in this demographic.

Question 10

A 55-year-old distance runner presents with intractable lateral hip pain and a Trendelenburg gait. MRI confirms a full-thickness, retracted tear of the gluteus medius tendon without fatty atrophy. During surgical repair, the surgeon must mobilize the tendon to its anatomic footprint. What is the anatomic insertion site of the gluteus medius on the greater trochanter?

Explanation

The footprint of the gluteus medius is located on the lateral and superoposterior facets of the greater trochanter. The gluteus minimus inserts on the anterior facet of the greater trochanter. The posterior facet is generally devoid of direct tendon attachments but is covered by the greater trochanteric bursa.

Question 11

A 30-year-old male sustains a direct blow to the point of his shoulder. Radiographs reveal an acromioclavicular (AC) joint injury. The clavicle is significantly displaced posteriorly into or through the trapezius fascia. According to the Rockwood classification, what type of AC injury is this?

Explanation

In the Rockwood classification of AC joint injuries, a Type IV injury is characterized by posterior displacement of the distal clavicle into or through the trapezius muscle/fascia. Type III is 25-100% superior displacement; Type V is >100% superior displacement; Type VI is inferior displacement (subcoracoid).

Question 12

During a bench press, a 28-year-old weightlifter experiences a sudden tearing sensation in his anterior chest wall. Examination reveals loss of the anterior axillary fold and weakness in internal rotation. MRI confirms a complete rupture of the pectoralis major tendon at its humeral insertion. Which of the following statements correctly describes the anatomy of the pectoralis major footprint on the humerus?

Explanation

The pectoralis major consists of a clavicular head and a sternal head. As the muscle fibers approach the humerus, the sternal head twists 180 degrees such that its most inferior fibers insert most proximally on the humerus, forming the deep/posterior lamina of the tendon. The clavicular head does not twist and forms the anterior/superficial lamina.

Question 13

A 22-year-old football player sustains a syndesmotic 'high ankle' sprain. To evaluate the stability, an external rotation stress test is performed. Which ligament of the syndesmotic complex provides the greatest resistance to distal tibiofibular diastasis?

Explanation

While the AITFL is the most commonly injured and the first to tear in a high ankle sprain, the posterior inferior tibiofibular ligament (PITFL) is the strongest component of the syndesmosis and provides the greatest resistance (approximately 42%) to distal tibiofibular diastasis. The AITFL provides about 35%, and the interosseous ligament provides about 22%.

Question 14

A 14-year-old male with open physes presents with knee pain. MRI reveals a 1.5 cm osteochondral defect (OCD) on the lateral aspect of the medial femoral condyle. The overlying cartilage is intact, and there is no subchondral fluid line indicating instability. What is the most appropriate initial management?

Explanation

In a skeletally immature patient (open physes) with a stable OCD lesion (intact cartilage, no high signal fluid line behind the lesion on T2 MRI), the initial treatment is non-operative management with activity restriction and protected weight-bearing. This has a high success rate (50-75%) in juvenile patients. Surgery is reserved for failed non-operative management or unstable lesions.

Question 15

A 20-year-old baseball pitcher presents with vague posterior shoulder pain during the late cocking phase of throwing. He exhibits a profound Glenohumeral Internal Rotation Deficit (GIRD). MRI arthrogram shows undersurface fraying of the supraspinatus and a posterosuperior labral tear. Which of the following is the primary pathophysiologic mechanism driving this condition (Internal Impingement)?

Explanation

Internal impingement in overhead throwing athletes is primarily driven by contracture of the posteroinferior capsule. This contracture leads to a Glenohumeral Internal Rotation Deficit (GIRD) and causes a posterosuperior shift of the humeral head during the late cocking phase (maximum abduction and external rotation). This shift pinches the posterosuperior rotator cuff between the greater tuberosity and the posterosuperior glenoid labrum.

Question 16

A 26-year-old male requires posterolateral corner (PLC) reconstruction following a severe knee injury. The surgeon must understand the biomechanics of the individual structures. Which of the following structures constitutes the primary static restraint to varus opening at 30 degrees of knee flexion?

Explanation

The posterolateral corner has three major static stabilizers: the fibular collateral ligament (LCL), the popliteus tendon, and the popliteofibular ligament. The LCL is the primary static restraint to varus stress, and this is best isolated clinically by performing the varus stress test at 30 degrees of knee flexion (which relaxes the cruciate ligaments).

Question 17

A 65-year-old patient with a massive irreparable rotator cuff tear and intact subscapularis is considered for a Superior Capsular Reconstruction (SCR). Which of the following is considered a strict contraindication to performing an SCR?

Explanation

Superior Capsular Reconstruction (SCR) relies on restoring the superior constraints of the glenohumeral joint to prevent superior humeral migration. A strict contraindication to SCR is advanced glenohumeral osteoarthritis (Hamada Grade > 3), such as Hamada Grade 4 (narrowing of the glenohumeral joint space). These patients are better treated with a Reverse Total Shoulder Arthroplasty (RTSA).

Question 18

A 23-year-old professional baseball pitcher presents with posteromedial elbow pain, particularly pronounced during the deceleration phase of throwing. He reports a catching sensation but no instability. Radiographs show a prominent osteophyte on the posteromedial olecranon. MRI shows an intact ulnar collateral ligament (UCL). He is diagnosed with Valgus Extension Overload (VEO). During arthroscopic resection of the osteophyte, what technical error must be strictly avoided?

Explanation

In Valgus Extension Overload (VEO) syndrome, symptomatic posteromedial olecranon osteophytes can be resected arthroscopically. However, over-resection of the posteromedial olecranon (removing more than 2-3 mm of native bone) significantly increases the strain on the native UCL, potentially destabilizing an elbow that was otherwise stable, and leading to iatrogenic valgus instability.

Question 19

A 32-year-old male sustains an ACL injury while skiing. Radiographs reveal an avulsion fracture of the lateral tibial plateau (Segond fracture). This pathognomonic fracture represents the avulsion of a ligamentous structure. Where is the consistent tibial insertion of this structure?

Explanation

A Segond fracture is an avulsion of the Anterolateral Ligament (ALL) of the knee. The ALL originates posterior and proximal to the lateral epicondyle and has a consistent tibial insertion midway between Gerdy's tubercle and the anterior margin of the fibular head, approximately 5 mm distal to the joint line.

Question 20

A 16-year-old gymnast presents with chronic anterior knee pain. Examination shows a prominent and tender tibial tubercle. Radiographs demonstrate fragmentation of the tibial tubercle apophysis. The condition is caused by repetitive traction forces from which of the following structures?

Explanation

The clinical presentation describes Osgood-Schlatter disease, which is a traction apophysitis of the tibial tubercle. It is caused by repetitive microtrauma and traction forces exerted by the patellar tendon on the unossified or partially ossified tibial tubercle apophysis in growing adolescents.

Question 21

A 45-year-old female felt a pop in the back of her knee while descending stairs. MRI demonstrates a complete radial tear at the posterior horn of the medial meniscus root, with 4 mm of meniscal extrusion. Which of the following best describes the primary biomechanical consequence of this specific injury?

Explanation

A complete meniscal root tear is biomechanically equivalent to a total meniscectomy. It disrupts the circumferential fibers of the meniscus, causing a loss of hoop stresses. This allows the meniscus to extrude radially and significantly increases peak articular contact pressures, predisposing the joint to rapid chondrolysis and osteoarthritis.

Question 22

A 19-year-old female presents with recurrent lateral patellar dislocations. CT imaging reveals a tibial tubercle-trochlear groove (TT-TG) distance of 23 mm. The trochlear depth and morphology are within normal limits. Which of the following is the most appropriate surgical management?

Explanation

A TT-TG distance of greater than 20 mm is considered pathologic and predisposes the patella to lateral maltracking and instability. In the setting of recurrent dislocations with a TT-TG >20 mm, MPFL reconstruction alone has a high failure rate. The standard of care is to combine an MPFL reconstruction with a bony procedure, such as a tibial tubercle osteotomy (anteromedialization), to correct the vector mechanics.

Question 23

A 22-year-old collegiate football player undergoes evaluation for recurrent anterior shoulder instability. 3D CT reconstructions reveal 15% glenoid bone loss. An MRI confirms an anterior labral tear and a Hill-Sachs lesion. Applying the 'glenoid track' concept, the Hill-Sachs lesion is calculated to be 'off-track'. Which of the following surgical procedures is most indicated to minimize recurrence while minimizing bone-block morbidity?

Explanation

According to the glenoid track paradigm, an 'off-track' Hill-Sachs lesion engages the anterior rim of the glenoid and carries a high risk of recurrent dislocation if treated with a Bankart repair alone. Because the glenoid bone loss is subcritical (<20%), a Latarjet is not strictly mandated. An arthroscopic Bankart repair combined with Remplissage (tenodesis of the infraspinatus/posterior capsule into the humeral defect) effectively converts the lesion to 'on-track' and provides excellent stability.

Question 24

A 21-year-old baseball pitcher presents with posteromedial elbow pain that occurs specifically during the deceleration phase of throwing. Physical examination reveals a 10-degree loss of terminal elbow extension and a positive valgus overpressure test. What is the most likely diagnosis?

Explanation

Valgus extension overload (VEO) syndrome occurs in overhead throwing athletes due to repetitive valgus stress and extreme extension during the deceleration and follow-through phases. This causes impingement of the posteromedial olecranon tip against the olecranon fossa, leading to osteophyte formation, loose bodies, posteromedial pain, and a mechanical loss of terminal extension.

Question 25

A 25-year-old ice hockey player presents with chronic anterior groin pain exacerbated by hip flexion and internal rotation. Radiographs display a pistol-grip deformity of the proximal femur, and MRI reveals an alpha angle of 65 degrees. Where is the bony pathomorphology primarily located in this condition?

Explanation

The patient has Cam-type femoroacetabular impingement (FAI), characterized by a non-spherical femoral head or decreased head-neck offset (pistol-grip deformity, alpha angle > 50-55 degrees). This extra bone is predominantly located at the anterosuperior aspect of the femoral head-neck junction and engages the anterosuperior acetabular rim during flexion and internal rotation, causing labral and chondral damage.

Question 26

A 30-year-old male sustains a traumatic knee dislocation during a rugby match. It is reduced in the emergency department. MRI shows complete tears of the ACL, PCL, and MCL, while the LCL remains intact. Pulses are 2+ and symmetric to the contralateral side, and the foot is well perfused. What is the most appropriate next step in acute management regarding his neurovascular status?

Explanation

Vascular injury is a devastating complication of knee dislocations, occurring in up to 18% of cases. Even in the presence of normal, symmetric palpable pulses, an intimal flap tear may be present. Current guidelines dictate that an Ankle-Brachial Index (ABI) should be measured in all dislocated knees. If the ABI is <0.9, an urgent CT angiogram is indicated. If >0.9, serial examinations are appropriate.

Question 27

A 32-year-old male bodybuilder feels a tearing sensation in his anterior chest while bench pressing. Examination shows ecchymosis and loss of the anterior axillary fold contour. MRI confirms a rupture of the sternocostal head of the pectoralis major muscle. Where does the sternocostal head normally insert relative to the clavicular head on the humerus?

Explanation

The pectoralis major tendon undergoes a 180-degree twist before inserting onto the lateral lip of the bicipital groove. Due to this twist, the sternocostal head fibers insert deep and proximal to the clavicular head fibers. The sternocostal head is the most commonly ruptured segment during eccentric loading exercises like bench pressing.

Question 28

A 40-year-old water skier falls forward, forcing her hip into hyperflexion while her knee remains fully extended. MRI shows a complete, 3-tendon avulsion of the proximal hamstrings from the ischial tuberosity, retracted 4 cm. Which nerve is at greatest risk of iatrogenic injury during open surgical repair of this lesion?

Explanation

The sciatic nerve lies immediately lateral (approximately 1.2 cm) to the ischial tuberosity. In proximal hamstring ruptures, particularly those that are retracted, extensive scarring can tether the sciatic nerve to the stump of the hamstring tendon. Careful neurolysis and visualization of the sciatic nerve are critical during the surgical approach to prevent injury.

Question 29

A 22-year-old female basketball player presents with persistent knee pain. MRI reveals a 3.5 cm squared full-thickness chondral defect on the weight-bearing zone of the medial femoral condyle. She had a microfracture procedure 18 months ago that failed to provide relief. Which of the following cartilage restoration techniques is most appropriate?

Explanation

For full-thickness articular cartilage defects greater than 2 to 3 cm squared, particularly those that have failed prior marrow stimulation (microfracture), cell-based therapies like Matrix-induced Autologous Chondrocyte Implantation (MACI) or structural grafts like Osteochondral Allograft (OCA) are indicated. OATS (autograft) is generally reserved for defects smaller than 2 cm squared due to donor-site morbidity. Repeat microfracture yields poor results, and UKA is premature in a 22-year-old.

Question 30

A 20-year-old elite baseball pitcher presents with insidious onset of posterior shoulder pain. On physical examination, his dominant shoulder has 25 degrees of internal rotation (IR) and 130 degrees of external rotation (ER). His non-dominant shoulder has 65 degrees of IR and 90 degrees of ER. His total arc of motion is 155 degrees bilaterally. What is the best initial management for this patient?

Explanation

This patient exhibits Glenohumeral Internal Rotation Deficit (GIRD). Throwers typically develop increased ER and decreased IR due to osseous adaptation (humeral retroversion) and posterior capsular contracture. Because his total arc of motion is symmetric (155 degrees), this is largely physiologic. However, to treat symptomatic posterior tightness and prevent progression to pathologic GIRD (where total arc is lost >5 degrees), the first-line treatment is physical therapy utilizing sleeper stretches and cross-body adduction stretches.

Question 31

A 22-year-old cross-country runner presents with bilateral lateral lower leg pain that reliably begins after 2 miles of running and resolves with rest. Compartment pressure testing reveals a resting anterior compartment pressure of 20 mmHg and a 1-minute post-exercise lateral compartment pressure of 35 mmHg. If a lateral compartment fasciotomy is performed, which nerve is at greatest risk of iatrogenic injury?

Explanation

The patient has chronic exertional compartment syndrome (CECS) of the lateral compartment. The superficial peroneal nerve courses through the lateral compartment and exits the fascia into the subcutaneous tissue in the distal third of the leg. It is highly susceptible to injury during lateral compartment fasciotomies.

Question 32

During surgical reconstruction of a multi-ligament knee injury involving the posterolateral corner (PLC), the surgeon attempts to accurately locate the femoral footprint of the popliteus tendon. Where is the anatomic femoral attachment of the popliteus tendon located relative to the lateral collateral ligament (LCL) femoral attachment?

Explanation

Anatomic knowledge of the posterolateral corner is critical for successful reconstruction. The popliteus tendon inserts on the lateral femoral condyle in a sulcus that is situated anterior and distal to the femoral attachment of the lateral collateral ligament (LCL).

Question 33

When counseling a high-level athlete on graft choices for an anterior cruciate ligament (ACL) reconstruction, understanding graft biomechanics is crucial. Which of the following ACL grafts has the highest ultimate tensile load at time zero?

Explanation

A quadrupled hamstring autograft (semitendinosus and gracilis) has an ultimate tensile load of over 4,000 N, making it the strongest at time zero among the common grafts. A 10-mm BPTB graft is roughly 2,900 N, quadriceps tendon is around 2,100 N, and the native ACL is approximately 2,160 N. Despite the higher tensile load at time zero, clinical outcomes between BPTB and hamstring grafts remain similar.

Question 34

A 55-year-old male laborer presents with a massive, retracted, and irreparable posterosuperior rotator cuff tear. He has minimal glenohumeral osteoarthritis and intact active forward elevation (no pseudoparalysis). He undergoes a superior capsular reconstruction (SCR) with dermal allograft. What is the primary biomechanical objective of the SCR graft?

Explanation

In massive, irreparable posterosuperior rotator cuff tears, the stabilizing superior vector of the supraspinatus is lost, leading to superior migration of the humeral head and subacromial impingement during deltoid contraction. An SCR utilizes a thick dermal allograft or autograft fascia lata attached to the superior glenoid and greater tuberosity. It acts as a static spacer and checkrein to depress the humeral head, preventing superior escape and restoring the fulcrum for the deltoid.

Question 35

A 24-year-old professional football player suffers a 'high ankle sprain' with a syndesmotic injury after an external rotation force to a dorsiflexed foot. Which ligament of the syndesmotic complex is the primary restraint to anterior translation of the distal fibula relative to the tibia?

Explanation

The syndesmotic complex stabilizes the distal tibiofibular joint. The AITFL is the first structure injured in an external rotation mechanism and is the primary restraint against anterior translation of the fibula relative to the tibia (providing approximately 35% of the total syndesmotic resistance to this specific displacement).

Question 36

A 22-year-old professional basketball player presents with acute lateral foot pain after planting and pivoting. Radiographs demonstrate a transverse fracture at the metaphyseal-diaphyseal junction of the fifth metatarsal, extending into the fourth-fifth intermetatarsal articulation. What is the recommended treatment to minimize nonunion and expedite return to play?

Explanation

This patient has a Zone 2 fracture of the proximal fifth metatarsal, classically known as a Jones fracture. It involves a vascular watershed area and has a high rate of nonunion. In competitive or elite athletes, acute intramedullary screw fixation is the standard of care as it significantly reduces the nonunion rate and time to return to sport compared to nonoperative management.

Question 37

A 19-year-old tennis player complains of chronic, vague right shoulder pain and 'dead arm' symptoms. Examination from behind shows asymmetric scapular resting posture. During active arm elevation, the inferior angle of the scapula becomes notably prominent. This finding corresponds to which type of scapular dyskinesis (Kibler classification)?

Explanation

According to the Kibler classification of scapular dyskinesis: Type I is characterized by prominence of the inferior angle (indicating tightness of the pectoralis minor or weakness of the lower trapezius). Type II is characterized by prominence of the entire medial border. Type III presents as superior elevation of the scapula. Type IV is normal, symmetric motion.

Question 38

A 22-year-old female ballet dancer complains of a palpable, audible, and sometimes painful snapping over the lateral aspect of her hip when returning her hip to a neutral position from a flexed and abducted state. What is the underlying pathoanatomy of this specific 'external snapping hip' syndrome?

Explanation

External snapping hip (coxa saltans) is caused by the iliotibial (IT) band or anterior border of the gluteus maximus snapping over the prominence of the greater trochanter during hip flexion/extension. Internal snapping hip is caused by the iliopsoas tendon snapping over the iliopectineal eminence or femoral head. Intra-articular snapping usually originates from labral tears or loose bodies.

Question 39

When surgically managing a symptomatic lesion of the long head of the biceps (LHB) tendon in an active 45-year-old patient, a subpectoral biceps tenodesis is performed instead of a simple tenotomy. Which of the following outcomes is significantly lower with tenodesis compared to tenotomy?

Explanation

Biceps tenotomy is simpler, allows faster immediate recovery, and avoids implant costs, but is associated with a significantly higher rate of a cosmetic 'Popeye' deformity (distal retraction of the muscle belly) and occasionally fatigue cramping in active individuals. Biceps tenodesis secures the tendon, thereby restoring resting muscle length, mitigating the Popeye deformity, and decreasing the risk of cramping.

Question 40

A 25-year-old cyclist falls directly onto his shoulder. Radiographs demonstrate a 100% superior displacement of the distal clavicle relative to the acromion. The coracoclavicular (CC) distance is increased by 50% compared to the contralateral uninjured side. The clinical exam reveals a prominent clavicle, but the deltotrapezial fascia is assessed as intact. According to the Rockwood Classification of acromioclavicular joint injuries, what type is this?

Explanation

In the Rockwood classification, a Type III AC separation is characterized by torn AC ligaments and torn CC ligaments, resulting in 25% to 100% superior translation of the clavicle relative to the acromion. The deltotrapezial fascia remains intact. In contrast, a Type V injury exhibits greater than 100% (often 100-300%) superior displacement and involves disruption of the deltotrapezial fascia.

Question 41

Which of the following is the primary biomechanical advantage of utilizing the tibial inlay technique compared to the transtibial technique for a Posterior Cruciate Ligament (PCL) reconstruction?

Explanation

The primary biomechanical advantage of the tibial inlay technique is the avoidance of the 'killer turn'—the acute angle at the posterior aspect of the tibial plateau. In a transtibial PCL reconstruction, the graft is forced around this sharp angle, which can lead to graft abrasion, attenuation, and ultimately failure. The tibial inlay technique allows the graft to rest anatomically without this acute angle.

Question 42

During the evaluation of a patient with a suspected multiligamentous knee injury, the Dial test is performed. Which of the following findings classically indicates an isolated injury to the posterolateral corner (PLC)?

Explanation

The Dial test measures external rotation of the tibia. An isolated injury to the posterolateral corner (PLC) results in more than 10 degrees of increased external rotation (compared to the contralateral side) at 30 degrees of knee flexion, but not at 90 degrees, because an intact PCL becomes the primary restraint to external rotation at 90 degrees. Increased external rotation at both 30 and 90 degrees indicates a combined PCL and PLC injury.

Question 43

A 22-year-old hockey player presents with anterior groin pain exacerbated by hip flexion and internal rotation. Radiographs reveal an alpha angle of 65 degrees and decreased head-neck offset. Which of the following best describes the pathophysiology of cartilage damage in this specific condition?

Explanation

The patient has Cam-type Femoroacetabular Impingement (FAI), characterized by an aspherical femoral head-neck junction (alpha angle >55 degrees). During hip flexion, this nonspherical head engages the acetabulum, generating significant outside-in shear forces that lead to delamination of the anterosuperior acetabular articular cartilage from the subchondral bone. Pincer impingement (overcoverage) classically presents with linear contact causing labral damage and 'contre-coup' posterior chondral lesions.

Question 44

A 19-year-old collegiate baseball pitcher undergoes an ulnar collateral ligament (UCL) reconstruction. The anterior bundle of the UCL is the primary restraint to valgus stress. What are the true anatomical attachments of the anterior bundle of the UCL?

Explanation

The anterior bundle of the UCL is the primary static restraint to valgus stress at the elbow between 20 and 120 degrees of flexion. It originates on the anteroinferior surface of the medial epicondyle and inserts on the sublime tubercle, which is located on the medial aspect of the coronoid process of the ulna.

Question 45

A 24-year-old professional baseball pitcher complains of posteromedial elbow pain occurring specifically during the deceleration phase of throwing. He lacks 15 degrees of terminal extension. Radiographs demonstrate posteromedial olecranon osteophytes. Which of the following is the most likely underlying biomechanical etiology for this condition?

Explanation

The scenario describes Valgus Extension Overload syndrome, commonly seen in overhead throwing athletes. The underlying etiology is typically chronic attenuation or insufficiency of the anterior bundle of the UCL. This microinstability allows excessive valgus stress during the throwing motion, leading the olecranon to impinge against the posteromedial wall of the olecranon fossa, ultimately causing reactive osteophyte formation.

Question 46

According to the Snyder classification of Superior Labrum Anterior and Posterior (SLAP) tears, which of the following best describes a Type III lesion?

Explanation

In the Snyder classification: Type I is fraying of the superior labrum with an intact biceps anchor; Type II is detachment of the superior labrum and biceps anchor from the superior glenoid; Type III is a bucket-handle tear of the superior labrum with an intact biceps anchor; and Type IV is a bucket-handle tear of the superior labrum that propagates into the biceps tendon.

Question 47

A 30-year-old weightlifter feels a tearing sensation in his anterior axilla while performing a heavy bench press. Examination reveals loss of the anterior axillary fold and weakness in internal rotation. Which portion of the pectoralis major is most commonly ruptured, and at what anatomical location?

Explanation

Pectoralis major ruptures almost exclusively occur during heavy eccentric loading (e.g., bench press). The sternal head is most commonly injured because it is under maximum stretch and tension when the arm is extended, abducted, and externally rotated at the bottom of the bench press. The most common site of rupture is the humeral insertion, typically tearing off the bone.

Question 48

A 21-year-old soccer player sustains a high ankle sprain. Which of the following ligaments provides the greatest percentage of biomechanical restraint against diastasis of the distal tibiofibular syndesmosis?

Explanation

The posterior inferior tibiofibular ligament (PITFL) is the strongest ligament of the syndesmotic complex. Biomechanical studies have shown that the PITFL contributes approximately 42% of the resistance to syndesmotic diastasis, whereas the AITFL contributes ~35%, and the interosseous ligament provides ~22%.

Question 49

A 13-year-old gymnast presents with anterior knee pain. Radiographs and an MRI demonstrate a 1.5 cm osteochondritis dissecans (OCD) lesion on the lateral aspect of the medial femoral condyle. The physes are widely open, and the MRI shows intact cartilage with no fluid behind the bony lesion. What is the most appropriate initial management?

Explanation

In juvenile patients with widely open physes, stable OCD lesions (intact overlying cartilage, no high T2 fluid signal behind the lesion on MRI) have a very high rate of spontaneous healing. The standard of care is an initial 3 to 6 month trial of non-operative management, consisting of activity modification and restricted weight-bearing.

Question 50

A 24-year-old male presents with a symptomatic 3.5 square-centimeter full-thickness chondral defect on the weight-bearing surface of the medial femoral condyle. He has failed a prolonged course of conservative management. Based on current cartilage restoration algorithms, which of the following is the most appropriate surgical intervention?

Explanation

For large, full-thickness chondral defects (>2 to 3 cm^2), cell-based therapies like MACI or structural restoration with osteochondral allograft (OCA) are indicated. Microfracture is generally reserved for lesions <2 cm^2 due to the formation of structurally inferior fibrocartilage. OATS (using autograft) is also restricted to smaller lesions (<2 cm^2) due to significant donor site morbidity when harvesting large or multiple plugs.

Question 51

A 19-year-old female competitive swimmer presents with bilateral shoulder pain and a sensation of instability. Examination demonstrates a positive sulcus sign and apprehension in multiple planes. She has failed a 6-month trial of directed periscapular stabilization physical therapy. If surgical intervention is elected, what is the gold standard procedure?

Explanation

The patient has Multidirectional Instability (MDI), which typically affects overhead athletes and is primarily caused by a patulous, redundant inferior capsule rather than a discrete labral tear. The gold standard surgical treatment, indicated only after an exhaustive trial of physical therapy, is a capsular plication or inferior capsular shift (performed either open or arthroscopically) to reduce capsular volume.

Question 52

A 45-year-old female runner complains of chronic lateral hip pain that is severe during single-leg stance. MRI reveals a full-thickness avulsion of the gluteus medius tendon. At which exact anatomical location does the primary tendon of the gluteus medius insert?

Explanation

The greater trochanter has four facets. The gluteus medius inserts on the lateral and superoposterior facets. The gluteus minimus inserts on the anterior facet. The posterior facet is generally bare but is intimately related to the trochanteric bursa.

Question 53

A 20-year-old ballet dancer reports a painful 'snapping' sensation deep in her anterior groin when she extends her hip from a flexed, abducted, and externally rotated position. Dynamic ultrasound confirms the diagnosis of internal snapping hip syndrome. Over what specific bony structure is the involved tendon most commonly subluxating?

Explanation

Internal snapping hip syndrome (coxa saltans interna) is caused by the iliopsoas tendon snapping over the iliopectineal eminence or the femoral head/anterior hip capsule as the hip is brought from a flexed, abducted, and externally rotated position into extension and internal rotation. External snapping hip involves the iliotibial band snapping over the greater trochanter.

Question 54

A 22-year-old marathon runner presents with exercise-induced anterolateral leg pain that reliably forces him to stop running and resolves 30 minutes after rest. According to the Pedowitz criteria, which of the following intracompartmental pressure readings confirms a diagnosis of Chronic Exertional Compartment Syndrome (CECS)?

Explanation

The Pedowitz criteria for diagnosing Chronic Exertional Compartment Syndrome (CECS) require one or more of the following intracompartmental pressure thresholds: a pre-exercise resting pressure >15 mm Hg, a 1-minute post-exercise pressure >30 mm Hg, or a 5-minute post-exercise pressure >20 mm Hg.

Question 55

A 35-year-old male sustains an acute, complete Achilles tendon rupture. He discusses treatment options with his orthopedic surgeon. Based on current high-level randomized controlled trials, which of the following statements most accurately compares non-operative management with an early functional rehabilitation protocol to operative repair?

Explanation

Modern literature, notably the Willits et al. trial, demonstrates that non-operative management combined with an early dynamic functional rehabilitation protocol yields re-rupture rates that are statistically similar to those of operative repair. Operative repair carries higher risks of wound complications and iatrogenic sural nerve injury.

Question 56

A professional American football player sustains a forced hyperextension injury to his first metatarsophalangeal (MTP) joint, resulting in a 'turf toe' injury. Which of the following clinical or radiographic findings is an absolute indication for acute surgical intervention?

Explanation

Indications for surgical management of turf toe (MTP joint sprain) include a Grade III injury characterized by complete disruption of the plantar plate with gross instability, proximal retraction of the sesamoids on radiographs, intra-articular loose bodies, or an intra-articular fracture. Proximal migration of the sesamoids confirms complete disruption of the functional flexor apparatus.

Question 57

A 26-year-old professional soccer player is diagnosed with 'athletic pubalgia' (core muscle injury) after complaining of chronic, recalcitrant groin pain. This condition is classically characterized by a pathological imbalance between the antagonistic forces of which two anatomic structures inserting on the pubis?

Explanation

Athletic pubalgia, or 'sports hernia', typically involves microtearing or attenuation of the lower abdominal wall musculature at its insertion on the pubis. Biomechanically, it represents an imbalance between the superior pull of the rectus abdominis and the opposing inferior/lateral pull of the adductor longus, leading to anterior pelvic floor instability and pain.

Question 58

A 12-year-old Little League baseball pitcher presents with acute medial elbow pain and swelling. Radiographs reveal widening and partial avulsion of the medial epicondyle apophysis. Which phase of the throwing motion generates the highest valgus stress on the elbow, directly contributing to this pathophysiology?

Explanation

The late cocking and early acceleration phases of throwing generate the maximum valgus torque across the medial elbow. In skeletally immature athletes, the medial epicondyle apophysis is the weak link, and repetitive valgus stress leads to apophysitis or avulsion ('Little League Elbow'). In adults, this force typically injures the ulnar collateral ligament.

Question 59

A 24-year-old volleyball attacker presents with posterior shoulder pain during the cocking phase of her serve. An MR arthrogram reveals a 'peel-back' SLAP tear and partial-thickness, articular-sided tearing of the supraspinatus and infraspinatus footprint. This constellation of findings is pathognomonic for:

Explanation

Internal impingement occurs in overhead athletes when the arm is positioned in maximum abduction and external rotation (the late cocking phase). In this position, the posterosuperior aspect of the rotator cuff (supraspinatus/infraspinatus) gets pinched between the greater tuberosity and the posterosuperior glenoid/labrum, leading to articular-sided cuff tears and 'peel-back' SLAP lesions.

Question 60

A 45-year-old 'weekend warrior' sustains a sudden 'pop' in his knee while forcefully decelerating during a basketball game. He is unable to perform a straight leg raise. In differentiating a quadriceps tendon rupture from a patellar tendon rupture on lateral knee radiographs, which of the following findings would strictly indicate a quadriceps tendon rupture?

Explanation

A quadriceps tendon rupture disconnects the superior pull of the quadriceps muscle from the patella. Because the intact patellar tendon remains anchored to the tibial tubercle, the patella typically rests in an abnormally low position (patella baja or infera). Conversely, a patellar tendon rupture allows the unopposed quadriceps to pull the patella superiorly, resulting in patella alta.

Question 61

A 28-year-old male sustains an isolated Posterior Cruciate Ligament (PCL) injury. After failing non-operative management, he undergoes a single-bundle PCL reconstruction. To optimally restore the primary restraint to posterior tibial translation, the graft should be placed in the anatomic footprint of the anterolateral (AL) bundle. At what knee flexion angle should the AL bundle graft be tensioned and fixated?

Explanation

The PCL consists of the larger anterolateral (AL) bundle and the smaller posteromedial (PM) bundle. The AL bundle is tightest in flexion (90 degrees) and is the primary restraint to posterior translation. Single-bundle reconstructions typically recreate the AL bundle and are therefore tensioned at 90 degrees of knee flexion to optimally restore AP stability.

Question 62

A 45-year-old active female presents with acute onset posteromedial knee pain after a deep squat. MRI reveals a complete radial tear at the posterior root of the medial meniscus with 4 mm of meniscal extrusion. Biomechanically, if left untreated, this injury most closely approximates the contact pressures of which of the following scenarios?

Explanation

Posterior medial meniscus root tears disrupt the hoop stresses of the meniscus, leading to meniscal extrusion. Biomechanical studies have shown that a complete medial meniscus posterior root tear results in a significant decrease in contact area and increased peak contact pressures, which are biomechanically equivalent to a total medial meniscectomy. Early repair is indicated to prevent rapid progression to osteoarthritis.

Question 63

During an arthroscopic rotator cuff repair, the surgeon identifies a tear of the subscapularis tendon. Which of the following physical examination tests is most specific for evaluating a tear involving the upper border of the subscapularis tendon?

Explanation

The bear hug test is considered the most sensitive and specific test for detecting partial articular-sided tears or upper border tears of the subscapularis tendon. The lift-off test is highly specific but typically only positive in larger or complete tears involving the inferior portion of the subscapularis. Hornblower's sign evaluates the teres minor.

Question 64

A 25-year-old hockey player presents with chronic groin pain exacerbated by hip flexion and internal rotation. AP pelvis and Dunn lateral radiographs demonstrate an alpha angle of 68 degrees and a positive crossover sign. Which of the following morphologic abnormalities is most likely present?

Explanation

The patient has imaging signs of both Cam (alpha angle greater than 50-55 degrees on a Dunn lateral) and Pincer (positive crossover sign on an AP pelvis, indicating focal or global acetabular retroversion) impingement. Most cases of femoroacetabular impingement (FAI) represent a mixed morphology rather than isolated Cam or Pincer impingement.

Question 65

A 21-year-old collegiate baseball pitcher undergoes an ulnar collateral ligament (UCL) reconstruction using the docking technique. During the surgical approach, care must be taken to avoid injury to the medial antebrachial cutaneous nerve (MABC). The MABC typically runs in close proximity to which of the following structures in the medial elbow?

Explanation

During the approach for UCL reconstruction, the medial antebrachial cutaneous nerve (MABC) must be identified and protected. Its anterior and posterior branches typically course parallel and in close proximity to the basilic vein in the subcutaneous tissues over the medial elbow. Neuroma of the MABC is a known complication of UCL reconstruction.

Question 66

A 26-year-old overhead athlete is diagnosed with a Type II SLAP tear. The primary pathomechanical mechanism contributing to this injury in overhead throwers is known as the 'peel-back' mechanism. In which phase of the throwing motion does the peel-back mechanism exert the greatest torsional force on the biceps-labral anchor?

Explanation

The 'peel-back' mechanism is the predominant theory for Type II SLAP tears in overhead throwers. When the shoulder is placed in maximum abduction and external rotation (the late cocking phase), the vector of the biceps tendon changes, producing a torsional force that twists the superior labrum and 'peels' it posteriorly off the glenoid rim.

Question 67

A 13-year-old male with open physes presents with knee pain. MRI reveals a 1.5 cm osteochondritis dissecans (OCD) lesion with an intact overlying articular cartilage on the lateral aspect of the medial femoral condyle. Initial non-operative management fails after 6 months. What is the most appropriate next step in management?

Explanation

For a stable OCD lesion (intact articular cartilage) in a skeletally immature patient (open physes) that has failed 3-6 months of non-operative management, arthroscopic drilling (either transarticular or retroarticular) is the gold standard. Drilling penetrates the sclerotic margin, promoting revascularization and healing of the subchondral bone. Internal fixation or cartilage restoration procedures (OATS, ACI) are reserved for unstable or detached lesions.

Question 68

A 24-year-old female is 4 months status post ACL reconstruction with a bone-patellar tendon-bone autograft. She complains of an audible 'clunk' and an inability to achieve terminal extension. A localized nodule of fibrovascular tissue anterior to the graft is confirmed on MRI. Which of the following technical errors during the initial surgery most strongly predisposes to this specific complication?

Explanation

The patient has a Cyclops lesion (localized arthrofibrosis anterior to the ACL graft), presenting with an extension deficit and a terminal extension 'clunk'. A major technical risk factor for a Cyclops lesion is placing the tibial tunnel too anteriorly. This causes roof impingement of the graft during knee extension, leading to repetitive microtrauma, fraying of the graft, and subsequent reactive fibrovascular nodule formation.

Question 69

A 24-year-old male presents with recurrent anterior shoulder instability. CT scan demonstrates a 15% anterior glenoid bone loss and an engaging Hill-Sachs lesion. The surgeon plans an arthroscopic Bankart repair with a Remplissage procedure. Which of the following structures is tenodesed into the Hill-Sachs defect during a Remplissage?

Explanation

The Remplissage procedure (French for 'to fill') is an adjunct to an anterior Bankart repair for engaging Hill-Sachs lesions. It involves arthroscopic tenodesis of the infraspinatus tendon and the underlying posterior capsule into the humeral head defect. This prevents the lesion from engaging the anterior glenoid rim in abduction and external rotation, effectively converting an intra-articular defect into an extra-articular one.

Question 70

A 35-year-old male undergoes percutaneous repair of an acute Achilles tendon rupture. Post-operatively, he complains of numbness and tingling along the lateral aspect of his foot. Which of the following best describes the anatomic course of the nerve most likely injured during the procedure, relative to the Achilles tendon?

Explanation

The sural nerve provides sensation to the lateral aspect of the foot and is at risk during percutaneous or minimally invasive Achilles tendon repairs. The sural nerve typically crosses from medial to lateral near the level of the gastrocnemius musculotendinous junction (approximately 10 cm proximal to the calcaneal insertion) and runs intimately close to the lateral border of the Achilles tendon distally.

Question 71

A 30-year-old male with chronic posterior knee instability undergoes a single-bundle Posterior Cruciate Ligament (PCL) reconstruction. To optimally restore primary restraint against posterior tibial translation, the graft should replicate which native bundle of the PCL, and at what knee flexion angle should it be conventionally tensioned?

Explanation

The anterolateral (AL) bundle of the PCL is the primary restraint to posterior tibial translation at 90 degrees of knee flexion, whereas the posteromedial (PM) bundle is tighter in extension. In a standard single-bundle PCL reconstruction, the AL bundle is reconstructed. To restore maximum stability, the graft is conventionally tensioned at 90 degrees of knee flexion, where the native AL bundle is under its maximum physiological tension.

Question 72

A 25-year-old professional baseball pitcher presents with 'dead arm' syndrome and posterior shoulder pain during the late cocking phase of throwing. MRI arthrogram reveals a Type II Superior Labrum Anterior Posterior (SLAP) tear. During this specific phase of the throwing motion, what is the primary biomechanical force driving the 'peel-back' mechanism of the labrum?

Explanation

The 'peel-back' mechanism is the primary pathoanatomic driver of Type II SLAP tears in overhead throwers. It occurs during the late cocking phase of throwing, which is characterized by maximum shoulder abduction and external rotation. In this position, the biceps vector shifts posteriorly, creating a torsional force at the base of the biceps that peels the superior labrum off the posterior glenoid rim.

Question 73

A 20-year-old hockey player presents with chronic anterior groin pain. Physical examination demonstrates a positive FADIR test. Radiographs reveal a pistol grip deformity and an alpha angle of 65 degrees. During arthroscopic osteochondroplasty for this cam impingement, the surgeon must be careful to avoid extending the resection too far posteriorly. Which vessel provides the primary blood supply to the femoral head and is most at risk during posterior extension of the femoral neck resection?

Explanation

The deep branch of the medial femoral circumflex artery (MFCA) provides the predominant blood supply to the adult femoral head. The terminal retinacular vessels enter the capsule and femoral neck posterosuperiorly. When performing a cam resection (which is typically anterolateral), the surgeon must limit the resection posteriorly to avoid iatrogenic injury to these critical retinacular vessels, which could lead to avascular necrosis.

Question 74

A 26-year-old athlete sustains a traumatic knee injury. On examination, there is an increase of 15 degrees of external rotation of the tibia on the femur at 30 degrees of knee flexion compared to the uninjured side. However, at 90 degrees of knee flexion, the external rotation is symmetric between both knees. Which of the following structures is most likely injured?

Explanation

The Dial test evaluates for injuries to the Posterolateral Corner (PLC) and the PCL. An isolated PLC injury is characterized by an increase of >10 degrees of external rotation at 30 degrees of flexion, but not at 90 degrees, due to the secondary stabilizing effect of an intact PCL at 90 degrees. If the Dial test is positive at both 30 and 90 degrees, a combined PCL and PLC injury is indicated.

Question 75

A 14-year-old male presents with knee pain. MRI shows a 1.5 cm x 1.5 cm osteochondritis dissecans (OCD) lesion on the lateral aspect of the medial femoral condyle. The overlying articular cartilage is intact, but there is high T2 signal behind the lesion indicating lack of osseous integration. The patient's physes remain open. He has failed 4 months of strict non-weight bearing and rest. What is the most appropriate next step in surgical management?

Explanation

In a skeletally immature patient with a stable OCD lesion (intact overlying articular cartilage) that has failed a prolonged trial of conservative management, the standard of care is arthroscopic drilling (trans-articular or retro-articular). This creates channels into the viable subchondral bone, stimulating bleeding, vascular ingrowth, and subsequent osseous healing without violating the stable cartilage surface with fixation devices.

Question 76

A 22-year-old collegiate tennis player develops posterior shoulder pain while serving. Physical exam shows a Glenohumeral Internal Rotation Deficit (GIRD) of 25 degrees. MRI arthrogram reveals undersurface fraying of the posterior supraspinatus and posterosuperior labrum. What is the primary underlying biomechanical mechanism causing this internal impingement?

Explanation

Internal impingement in overhead athletes is classically driven by a contracted posteroinferior capsule (clinically presenting as GIRD). During the late cocking phase (maximum abduction and external rotation), the tight posterior capsule acts as a tether, causing an obligate posterosuperior shift of the humeral head. This pinches the undersurface of the rotator cuff between the greater tuberosity and the posterosuperior glenoid/labrum.

Question 77

During a medial ulnar collateral ligament (UCL) reconstruction on a 21-year-old baseball pitcher using the modified Jobe technique, a muscle-splitting approach through the flexor-pronator mass is planned. To prevent painful postoperative neuroma formation, the surgeon must carefully identify and protect the medial antebrachial cutaneous nerve (MACN). What is the typical anatomic course of the MACN in this operative field?

Explanation

The medial antebrachial cutaneous nerve (MACN) runs anterior to the medial epicondyle and sends branches that cross the standard UCL incision from anterior to posterior. These branches are typically found in the subcutaneous tissue approximately 2 to 3 cm distal to the medial epicondyle. Careful superficial dissection is mandatory to avoid cutting these branches, which leads to highly symptomatic neuromas in throwing athletes.

Question 78

A 32-year-old recreational athlete undergoes repair of an acute Achilles tendon rupture. The surgeon plans an early functional rehabilitation protocol instead of traditional prolonged cast immobilization. Based on current high-level evidence, which of the following is the most established benefit of early functional rehabilitation compared to standard cast immobilization?

Explanation

Modern evidence, including AAOS Clinical Practice Guidelines, strongly supports early functional rehabilitation (early weight-bearing in a functional brace and early range of motion) for Achilles tendon ruptures. Compared to prolonged cast immobilization, it significantly decreases the rate of deep vein thrombosis (DVT), improves early functional scores, and facilitates faster return to work, without demonstrating a clinically significant increase in the re-rupture rate.

Question 79

A 19-year-old collegiate mountain biker sustains a completely displaced midshaft clavicle fracture with 2.5 cm of shortening. He undergoes open reduction and internal fixation (ORIF) with a superior pre-contoured plate. When counseling him on his return to full-contact competitive cycling, what is the most widely accepted clinical and radiographic criteria for clearance?

Explanation

Return to contact sports or high-risk activities following clavicle ORIF requires both clinical and radiographic healing to minimize the risk of re-fracture or hardware failure. The standard criteria include the patient being asymptomatic (pain-free, full range of motion, near-normal strength) combined with radiographic evidence of union, which is typically defined as the presence of bridging callus on at least 3 out of 4 cortices on orthogonal radiographs (usually achieved by 8 to 12 weeks).

Question 80

A 23-year-old skier presents to the emergency department after a twisting knee injury. Plain radiographs reveal an elliptic avulsion fracture of the lateral tibial plateau, known as a Segond fracture. Which ligamentous structure is most intimately associated with this bony avulsion, and what major intra-articular injury is virtually pathognomonic with this finding?

Explanation

A Segond fracture is an avulsion fracture of the lateral tibial plateau that occurs with internal rotation and varus stress. The avulsed fragment represents the tibial attachment of the anterolateral complex, particularly the anterolateral ligament (ALL) and lateral capsule. This radiographic finding is virtually pathognomonic (up to 75-100% association) for a concurrent tear of the Anterior Cruciate Ligament (ACL).

Question 81

A 30-year-old competitive weightlifter feels a sudden "pop" in his anterior chest while performing a heavy bench press. MRI confirms an isolated rupture of the sternal head of the pectoralis major. To ensure anatomic repair, where should the surgeon reattach the sternal head footprint relative to the clavicular head footprint on the humerus?

Explanation

The pectoralis major tendon undergoes a 180-degree twist before insertion. The sternal head inserts distal and deep (posterior) to the clavicular head on the lateral lip of the bicipital groove.

Question 82

A 22-year-old collegiate baseball pitcher presents with vague posterior shoulder pain during the late cocking phase of throwing. Arthroscopic evaluation reveals fraying of the posterosuperior labrum and a partial articular-sided tear of the supraspinatus. What is the primary pathophysiological mechanism for this specific constellation of findings?

Explanation

This describes internal impingement, common in overhead athletes. In abduction and external rotation, the greater tuberosity impinges against the posterosuperior glenoid, pinching the posterior rotator cuff and labrum.

Question 83

A 45-year-old female presents with acute medial joint line pain after squatting. MRI reveals a complete radial tear of the medial meniscus at its posterior root attachment, accompanied by 4 mm of meniscal extrusion. If treated non-operatively, what is the most likely biomechanical consequence within the knee?

Explanation

A complete meniscal root tear disrupts the ability to convert axial loads into hoop stresses. Biomechanically, this results in peak contact pressures equivalent to those seen after a total meniscectomy.

Question 84

A 35-year-old male undergoes surgical repair of an acute distal biceps tendon rupture. The surgeon utilizes a traditional two-incision technique. Which of the following complications is significantly more common with this approach compared to a single anterior incision technique?

Explanation

The two-incision technique carries a higher risk of heterotopic ossification and radioulnar synostosis due to violation of the interosseous membrane. A single anterior incision has a higher risk of lateral antebrachial cutaneous nerve (LACN) injury.

Question 85

A 21-year-old elite collegiate basketball player sustains an acute, non-displaced fracture of the fifth metatarsal at the metaphyseal-diaphyseal junction (Zone 2). To maximize his chances of returning to play this season and minimize the risk of nonunion, what is the gold standard treatment?

Explanation

Zone 2 (Jones) fractures occur in a vascular watershed area and have a high rate of nonunion. In elite athletes, early intramedullary screw fixation is recommended to ensure reliable healing and expedite return to play.

Question 86

A 25-year-old ice hockey goalie complains of deep, activity-related groin pain. An AP pelvis radiograph demonstrates a "crossover sign" and prominent ischial spines. Which of the following diagnoses best explains these radiographic findings?

Explanation

A crossover sign (anterior rim crossing the posterior rim) and prominent ischial spines on an AP pelvis radiograph are classic indicators of focal or global acetabular retroversion, a primary cause of Pincer-type FAI.

Question 87

During a posterior cruciate ligament (PCL) reconstruction, the surgeon aims to accurately recreate the native biomechanics of the ligament. Which bundle of the PCL is the largest, and in what position of knee flexion is it under the most tension?

Explanation

The PCL consists of two main bundles. The anterolateral bundle is larger and is tightest in knee flexion, whereas the smaller posteromedial bundle is tightest in knee extension.

Question 88

A 22-year-old football running back sustains a grade III medial collateral ligament (MCL) tear. MRI demonstrates an avulsion of the MCL from its distal tibial attachment, with the pes anserinus tendons interposed between the torn ligament and the bone. What is the most appropriate management?

Explanation

This describes a "Stener-like lesion" of the knee, where the pes anserinus blocks reduction of the distally avulsed MCL to its footprint. This prevents spontaneous healing and is an absolute indication for acute surgical repair.

Question 89

A 20-year-old collegiate pitcher undergoes ulnar collateral ligament (UCL) reconstruction utilizing an ipsilateral palmaris longus autograft. Which specific component of the native UCL complex is the primary restraint to valgus stress at 90 degrees of elbow flexion?

Explanation

The anterior bundle of the UCL is the primary restraint to valgus stress. Specifically, the anterior band is tight in extension and remains the primary restraint up to 120 degrees of flexion, while the posterior band tightens more in higher flexion.

Question 90

A 35-year-old male with a history of poorly controlled seizures presents with a locked posterior shoulder dislocation. CT imaging reveals an anteromedial humeral head impaction fracture (reverse Hill-Sachs lesion) involving 30% of the articular surface. What is the most appropriate surgical intervention?

Explanation

For reverse Hill-Sachs lesions involving 20-40% of the articular surface, the modified McLaughlin procedure is indicated. This involves transferring the lesser tuberosity (with the subscapularis) into the anteromedial defect to prevent recurrent posterior engagement.

Question 91

A 28-year-old marathon runner presents with persistent medial knee pain. Imaging and subsequent arthroscopy confirm a 3.5 cm2 isolated, full-thickness chondral defect on the weight-bearing surface of the medial femoral condyle. The surrounding cartilage and meniscus are pristine. Which of the following is the most appropriate definitive surgical treatment?

Explanation

For large, symptomatic full-thickness chondral defects (>2-3 cm2) in young, active patients, cell-based therapies like MACI or osteochondral allografts are indicated. Microfracture and single-plug OATS are generally reserved for smaller defects (<2 cm2).

Question 92

During a percutaneous repair of an acute Achilles tendon rupture, the surgeon places lateral sutures. To avoid iatrogenic injury to the sural nerve, the surgeon must be aware of its anatomic course. At approximately what distance proximal to the calcaneal insertion does the sural nerve cross the lateral border of the Achilles tendon?

Explanation

The sural nerve courses distally in the posterior calf and crosses from midline to the lateral border of the Achilles tendon approximately 9.8 to 10 cm proximal to the calcaneal insertion. Sutures placed blindly in this lateral region risk nerve entrapment.

Question 93

A 45-year-old female runner complains of recalcitrant lateral hip pain and demonstrates a positive Trendelenburg sign. MRI confirms an isolated, full-thickness tear of the main gluteus medius tendon. During endoscopic repair, the surgeon should reattach the tendon to its primary anatomical footprint located on the:

Explanation

The gluteus medius tendon primarily inserts on the lateral and superoposterior facets of the greater trochanter. The gluteus minimus inserts on the anterior facet.

Question 94

A 13-year-old male soccer player presents with vague knee pain. MRI shows a 1.5 cm osteochondritis dissecans (OCD) lesion on the lateral aspect of the medial femoral condyle. A high-signal T2 line is visible behind the lesion. Radiographs confirm wide open physes. What is the most appropriate management?

Explanation

A high-signal T2 line behind an OCD lesion indicates synovial fluid tracking behind the fragment, denoting instability. Despite the open physes, unstable lesions require surgical stabilization (drilling and fixation) to prevent loose body formation.

Question 95

A 29-year-old mountain biker suffers a Type V acromioclavicular (AC) joint separation and is scheduled for a coracoclavicular (CC) ligament reconstruction. To properly recreate the native biomechanics, the surgeon must understand the orientation of the conoid and trapezoid ligaments. Which of the following describes the anatomic position of the conoid ligament relative to the trapezoid ligament?

Explanation

The coracoclavicular ligaments consist of the conoid and trapezoid. The conoid ligament is located medial and posterior to the trapezoid ligament and provides primary restraint to superior clavicular translation.

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