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Question 4181

Topic: Knee Sports

A 16-year-old female presents with recurrent lateral patellar dislocations. She is scheduled for a medial patellofemoral ligament (MPFL) reconstruction. To ensure proper graft isometry, the femoral tunnel must be placed at Schöttle's point. Where is this anatomic location relative to the osseous landmarks?

. Anterior to the medial epicondyle
. Superior to the adductor tubercle
. Between the medial epicondyle and adductor tubercle
. Distal to the medial epicondyle
. On the lateral epicondyle

Correct Answer & Explanation

. Anterior to the medial epicondyle


Explanation

The anatomic femoral origin of the MPFL (Schöttle's point) is located in a saddle-like depression between the medial epicondyle and the adductor tubercle.

Question 4182

Topic: 5. Sports Medicine

A 45-year-old recreational tennis player is diagnosed with an isolated Type II SLAP tear that has failed 6 months of conservative management. Which surgical intervention has been shown to yield the highest rates of return to sport and patient satisfaction in patients of this age?

. Arthroscopic debridement of the labrum
. Arthroscopic primary SLAP repair
. Biceps tenodesis
. Arthroscopic biceps tenotomy
. Open anterior capsulolabral reconstruction

Correct Answer & Explanation

. Arthroscopic debridement of the labrum


Explanation

In patients older than 40 years with a Type II SLAP tear, primary SLAP repair is associated with higher rates of stiffness and revision. Biceps tenodesis provides superior clinical outcomes and return to play in this demographic.

Question 4183

Topic: Knee Sports

A 48-year-old female feels a "pop" in her posterior knee while squatting to garden. An MRI reveals an isolated complete tear of the medial meniscus posterior root. Biomechanically, this injury is equivalent to which of the following?

. A stable knee with normal contact pressures
. A knee after a total medial meniscectomy
. An isolated posterior cruciate ligament tear
. A knee after an anterior cruciate ligament reconstruction
. A radial tear of the anterior horn of the medial meniscus

Correct Answer & Explanation

. A stable knee with normal contact pressures


Explanation

A complete tear of the meniscal root disrupts hoop stresses within the meniscus, causing it to extrude under load. Biomechanically, this alters tibiofemoral contact pressures to a degree equivalent to a total meniscectomy.

Question 4184

Topic: Knee Sports

A 26-year-old runner presents with chronic, deep ankle pain. MRI reveals a 1.8 square centimeter osteochondral lesion (OCL) on the medial talar dome without subchondral cysts. He has failed 6 months of conservative care. What is the most appropriate surgical treatment?

. Arthroscopic bone marrow stimulation (microfracture)
. Arthroscopic partial synovectomy
. Osteochondral autograft transfer system (OATS)
. Ankle arthrodesis
. Total ankle arthroplasty

Correct Answer & Explanation

. Arthroscopic bone marrow stimulation (microfracture)


Explanation

Microfracture is generally recommended for talar OCLs smaller than 1.5 cm^2. For larger lesions (>1.5 cm^2), structural grafting with techniques like OATS provides superior outcomes and better hyaline-like cartilage restoration.

Question 4185

Topic: 5. Sports Medicine

An 11-year-old male with wide-open physes sustains a complete anterior cruciate ligament (ACL) tear. He is highly active and wishes to return to pivoting sports. To minimize the risk of growth arrest, which of the following surgical techniques is recommended?

. Transphyseal bone-patellar tendon-bone (BPTB) reconstruction
. Standard transphyseal hamstring reconstruction with suspensory fixation
. Iliotibial band physeal-sparing extra-articular reconstruction (e.g., MacIntosh/Kocher)
. Primary suture repair of the ACL stump
. Wait until skeletal maturity before considering any surgery

Correct Answer & Explanation

. Transphyseal bone-patellar tendon-bone (BPTB) reconstruction


Explanation

In prepubescent patients with significant growth remaining (Tanner stage 1 or 2), physeal-sparing techniques like the modified MacIntosh/Kocher IT band reconstruction are recommended to avoid crossing the physes and causing growth arrest.

Question 4186

Topic: Shoulder & Hip Sports

A 29-year-old professional volleyball player presents with isolated weakness in shoulder external rotation. MRI reveals a paralabral cyst compressing a nerve. At what anatomic location is this cyst most likely situated?

. Suprascapular notch
. Quadrilateral space
. Spinoglenoid notch
. Triangular interval
. Rotator interval

Correct Answer & Explanation

. Suprascapular notch


Explanation

Compression of the suprascapular nerve at the spinoglenoid notch affects only the infraspinatus muscle, leading to isolated external rotation weakness. Compression at the suprascapular notch would affect both the supraspinatus and infraspinatus.

Question 4187

Topic: Knee Sports

A 14-year-old male complains of vague, activity-related knee pain. Radiographs demonstrate an osteochondritis dissecans (OCD) lesion.

What is the most common anatomic location for an OCD lesion in the knee?

. Medial aspect of the medial femoral condyle
. Lateral aspect of the medial femoral condyle
. Medial aspect of the lateral femoral condyle
. Lateral aspect of the lateral femoral condyle
. Inferior pole of the patella

Correct Answer & Explanation

. Medial aspect of the medial femoral condyle


Explanation

The most common location for osteochondritis dissecans (OCD) of the knee is the lateral aspect of the medial femoral condyle, accounting for over 70% of cases.

Question 4188

Topic: 5. Sports Medicine

A 16-year-old female soccer player sustains a torn anterior cruciate ligament (ACL) and is scheduled for reconstruction. What is the most significant disadvantage of utilizing a bone-patellar tendon-bone (BPTB) allograft compared to an autograft in this patient demographic?

. Significantly higher rerupture rate
. Increased risk of post-operative arthrofibrosis
. Higher incidence of anterior knee pain
. Inability to achieve rigid fixation
. Greater risk of patellar fracture

Correct Answer & Explanation

. Significantly higher rerupture rate


Explanation

Allograft tissue has a significantly higher failure and rerupture rate compared to autograft when used for ACL reconstruction in young, highly active patients under the age of 25. This is largely attributed to delayed graft incorporation and slower biological remodeling.

Question 4189

Topic: Knee Sports

A 25-year-old football player complains of knee instability after a direct blow to the anteromedial tibia. The Dial test demonstrates 15 degrees of increased external rotation at 30 degrees of knee flexion, but symmetric rotation compared to the contralateral side at 90 degrees. Which structure is most likely injured?

. Lateral collateral ligament and popliteus tendon
. Posterior cruciate ligament alone
. Posterior cruciate ligament and lateral collateral ligament
. Anterior cruciate ligament and posterolateral corner
. Medial collateral ligament and posterior oblique ligament

Correct Answer & Explanation

. Lateral collateral ligament and popliteus tendon


Explanation

An isolated injury to the posterolateral corner (LCL and popliteus) typically presents with increased external rotation at 30 degrees of flexion. At 90 degrees, the intact posterior cruciate ligament acts as a secondary restraint, neutralizing the rotational asymmetry.

Question 4190

Topic: Shoulder & Hip Sports

A 19-year-old collegiate baseball pitcher complains of posterior shoulder pain strictly during the late cocking phase of throwing. Examination reveals a 20-degree loss of internal rotation (GIRD) compared to the contralateral shoulder. What is the most likely pathomechanism of his pain?

. Subcoracoid impingement of the subscapularis
. Primary outlet impingement under the acromion
. Contact between the articular surface of the rotator cuff and the posterosuperior glenoid
. Anterior capsular contracture causing posterior humeral head translation
. Scapular winging secondary to a long thoracic nerve palsy

Correct Answer & Explanation

. Subcoracoid impingement of the subscapularis


Explanation

Internal impingement in overhead throwers involves pathological contact between the articular side of the posterior rotator cuff and the posterosuperior glenoid labrum. This occurs in the late cocking phase due to excessive external rotation and anterior capsular laxity coupled with posterior capsular contracture.

Question 4191

Topic: 5. Sports Medicine

A 30-year-old marathon runner presents with persistent deep ankle pain. MRI reveals a 1.8 square cm osteochondral lesion on the medial talar dome. Non-operative management has failed. What is the most appropriate surgical treatment algorithm for this specific defect size?

. Arthroscopic debridement and marrow stimulation (microfracture)
. Osteochondral autograft transfer (OATS)
. Retrograde drilling of the talus
. Subchondroplasty
. Total ankle arthroplasty

Correct Answer & Explanation

. Arthroscopic debridement and marrow stimulation (microfracture)


Explanation

Osteochondral lesions of the talus larger than 1.5 square cm have unacceptably high failure rates with marrow stimulation (microfracture). Osteochondral autograft transfer (OATS) restores the articular surface with structural hyaline cartilage and is indicated for these larger or cystic lesions.

Question 4192

Topic: Knee Sports

An 18-year-old female has recurrent lateral patellar instability. Advanced imaging demonstrates a tibial tubercle-trochlear groove (TT-TG) distance of 24 mm and a normal Caton-Deschamps ratio. What is the most appropriate surgical procedure?

. Isolated Medial Patellofemoral Ligament (MPFL) reconstruction
. Arthroscopic lateral retinacular release
. Tibial tubercle anteromedialization and MPFL reconstruction
. Proximal soft-tissue realignment (Insall procedure)
. Trochleoplasty

Correct Answer & Explanation

. Isolated Medial Patellofemoral Ligament (MPFL) reconstruction


Explanation

A TT-TG distance greater than 20 mm is pathognomonic for severe lateralizing patellar forces and requires a tibial tubercle osteotomy (anteromedialization) to normalize the extensor mechanism. Isolated MPFL reconstruction in this setting has a high failure rate due to uncorrected bony malalignment.

Question 4193

Topic: Shoulder & Hip Sports

A 21-year-old rugby player suffers from recurrent anterior shoulder instability. A pre-operative 3D CT scan demonstrates 28 percent anterior glenoid bone loss. What is the most appropriate definitive surgical management?

. Arthroscopic Bankart repair with suture anchors
. Arthroscopic Bankart repair with Remplissage
. Coracoid transfer (Latarjet procedure)
. Open inferior capsular shift
. Proximal humerus derotational osteotomy

Correct Answer & Explanation

. Arthroscopic Bankart repair with suture anchors


Explanation

Anterior glenoid bone loss greater than 20 to 25 percent creates an inverted pear glenoid, resulting in a high failure rate for isolated soft-tissue Bankart repairs. A Latarjet procedure (coracoid transfer) is the gold standard for restoring bony stability in these patients.

Question 4194

Topic: Knee Sports

A 45-year-old female experiences a painful pop in the posterior aspect of her knee while squatting to garden. MRI shows a radial tear adjacent to the posterior horn medial meniscus attachment. What is the primary biomechanical consequence of leaving this specific tear untreated?

. Increased tension on the anterior cruciate ligament during extension
. Loss of hoop stresses equivalent to a total meniscectomy
. Medial compartment narrowing solely due to increased meniscal cartilage stiffness
. Compensatory lateral compartment mechanical overload
. Development of a localized parameniscal cyst without articular cartilage changes

Correct Answer & Explanation

. Increased tension on the anterior cruciate ligament during extension


Explanation

A posterior medial meniscal root tear completely disrupts the circumferential hoop stresses of the meniscus, leading to load transmission equivalent to a complete meniscectomy. This results in rapid articular cartilage wear and accelerated medial compartment osteoarthritis if left uncorrected.

Question 4195

Topic: 5. Sports Medicine

During diagnostic arthroscopy of a 22-year-old elite baseball pitcher, a Type II SLAP tear is identified. The dynamic peel-back mechanism is clearly demonstrated on the monitor. In what arm position is this specific pathomechanism most pronounced?

. Abduction and maximal external rotation
. Adduction and internal rotation
. Forward flexion and internal rotation
. Extension and maximal internal rotation
. Abduction and maximal internal rotation

Correct Answer & Explanation

. Abduction and maximal external rotation


Explanation

The peel-back mechanism occurs during the late cocking phase of throwing, which corresponds to maximum abduction and external rotation. This specific position shifts the biceps vector posteriorly, twisting the superior labrum and actively peeling it off the underlying glenoid rim.

Question 4196

Topic: Knee Sports

A 14-year-old male presents with vague, aching knee pain. Radiographs demonstrate an osteochondritis dissecans (OCD) lesion. What is the classic and most common anatomic location for an OCD lesion in the knee?

. Lateral aspect of the medial femoral condyle
. Medial aspect of the lateral femoral condyle
. Central portion of the trochlear groove
. Inferior pole of the patella
. Posterior aspect of the lateral tibial plateau

Correct Answer & Explanation

. Lateral aspect of the medial femoral condyle


Explanation

The classic and most common location for an osteochondritis dissecans (OCD) lesion in the knee is the lateral aspect of the medial femoral condyle. This location accounts for approximately 70 percent of all knee OCD lesions seen in clinical practice.

Question 4197

Topic: Knee Sports

A 26-year-old skier presents with a significantly swollen knee after a twisting fall. An anteroposterior radiograph reveals a small elliptical bone avulsion fragment from the proximal lateral tibia, known as a Segond fracture. What is the most commonly associated intra-articular injury?

. Posterior cruciate ligament tear
. Anterior cruciate ligament tear
. Medial collateral ligament avulsion
. Lateral collateral ligament midsubstance tear
. Popliteofibular ligament disruption

Correct Answer & Explanation

. Posterior cruciate ligament tear


Explanation

A Segond fracture is a cortical avulsion of the anterolateral ligament (ALL) and lateral capsule from the proximal lateral tibia. It is considered highly pathognomonic for an underlying anterior cruciate ligament (ACL) tear, occurring in up to 75 to 100 percent of these cases.

Question 4198

Topic: 5. Sports Medicine

A 24-year-old baseball pitcher presents with deep shoulder pain and decreased throwing velocity. The 'peel-back' mechanism during late cocking is suspected. Which physical examination test is most classically associated with diagnosing the resulting pathology?

. Lift-off test
. Hawkins-Kennedy test
. O'Brien test (active compression)
. Neer impingement sign
. Empty can (Jobe) test

Correct Answer & Explanation

. Lift-off test


Explanation

The O'Brien (active compression) test evaluates for Superior Labrum Anterior to Posterior (SLAP) tears. The peel-back mechanism of the biceps anchor during the late cocking phase is a primary cause of SLAP tears in overhead athletes.

Question 4199

Topic: Shoulder & Hip Sports

A 22-year-old collegiate volleyball player complains of posterior shoulder pain when spiking the ball. Examination reveals a positive apprehension test and a relocation test that relieves her posterior shoulder pain. She demonstrates GIRD (glenohumeral internal rotation deficit). What is the most likely diagnosis?

. Anterior instability
. Internal impingement
. Subacromial impingement
. Posterior shoulder instability
. Quadrilateral space syndrome

Correct Answer & Explanation

. Anterior instability


Explanation

Internal impingement is characterized by posterior shoulder pain during late cocking (abduction and external rotation) due to the undersurface of the cuff impinging on the posterosuperior labrum. The relocation test typically relieves this posterior pain.

Question 4200

Topic: Knee Sports

A 26-year-old male presents with a posterior sag sign after a dashboard injury. Which of the following physical examination findings most suggests a combined Posterior Cruciate Ligament (PCL) and Posterolateral Corner (PLC) injury?

. Increased external rotation of the tibia at both 30 and 90 degrees of knee flexion
. Increased external rotation of the tibia at 30 degrees but symmetric at 90 degrees
. Positive pivot shift test
. Medial joint line tenderness
. Positive anterior drawer test

Correct Answer & Explanation

. Increased external rotation of the tibia at both 30 and 90 degrees of knee flexion


Explanation

An isolated PLC injury typically presents with increased external rotation only at 30 degrees of knee flexion. If external tibial rotation is increased at both 30 and 90 degrees, it indicates a combined PLC and PCL injury.