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Question 5101

Topic: Knee Sports
A 28-year-old male strikes his knee on the dashboard during a motor vehicle collision. Examination reveals a grade III posterior drawer at 90 degrees of knee flexion. Which bundle of the torn ligament normally provides the primary restraint to posterior tibial translation at this flexion angle?
. Posteromedial bundle of the PCL
. Anterolateral bundle of the PCL
. Posterolateral bundle of the ACL
. Anteromedial bundle of the ACL
. Meniscofemoral ligaments

Correct Answer & Explanation

. Anterolateral bundle of the PCL


Explanation

The anterolateral bundle of the posterior cruciate ligament (PCL) is tightest in flexion and serves as the primary restraint to posterior tibial translation at 90 degrees. The posteromedial bundle is tightest in extension.

Question 5102

Topic: Shoulder & Hip Sports

A 22-year-old collegiate baseball pitcher presents with vague, deep posterior shoulder pain during the late cocking phase of throwing. Physical examination demonstrates a 25-degree deficit in internal rotation at 90 degrees of abduction compared to the contralateral side. What is the most appropriate initial management for this patient?

. Anterior capsulorrhaphy
. Arthroscopic SLAP repair
. Posterior capsule stretching and rotator cuff strengthening
. Latarjet procedure
. Biceps tenodesis

Correct Answer & Explanation

. Posterior capsule stretching and rotator cuff strengthening


Explanation

Glenohumeral internal rotation deficit (GIRD) is a primary driver of internal impingement and secondary SLAP tears in overhead athletes due to a posterior peel-back mechanism. The cornerstone of initial management is a targeted stretching program (e.g., sleeper stretches) for the posterior capsule.

Question 5103

Topic: 5. Sports Medicine

A 25-year-old professional rugby player sustains an acute knee dislocation resulting in combined ACL and posterolateral corner (PLC) tears. On examination, he exhibits a complete foot drop. What is the most appropriate surgical management for the neurological deficit during his concurrent ligament reconstruction?

. Primary end-to-end nerve repair
. Nerve autografting using the sural nerve
. Nerve exploration, neurolysis, and observation
. Immediate posterior tibial tendon transfer
. Delayed ligament reconstruction until nerve recovery

Correct Answer & Explanation

. Nerve exploration, neurolysis, and observation


Explanation

Common peroneal nerve palsy associated with acute knee dislocation and PLC injury is a stretch injury rather than a transection. It is initially managed with exploration, neurolysis, and observation. Tendon transfers are reserved for patients with lack of functional recovery at 1 year.

Question 5104

Topic: Shoulder & Hip Sports

A 21-year-old hockey player presents with chronic groin pain exacerbated by hip flexion. A frog-leg lateral radiograph reveals an alpha angle of 65 degrees. Physical exam yields a positive FADIR test. The bony deformity associated with this condition is most likely caused by an abnormality located at which of the following sites?

. Acetabular rim
. Anterolateral femoral head-neck junction
. Greater trochanter
. Ischial tuberosity
. Lesser trochanter

Correct Answer & Explanation

. Anterolateral femoral head-neck junction


Explanation

This patient has Cam-type femoroacetabular impingement (FAI), characterized by a reduced femoral head-neck offset. The aspherical bone formation is most commonly located at the anterolateral femoral head-neck junction.

Question 5105

Topic: Knee Sports

A 45-year-old active female feels a "pop" in her posterior knee while descending stairs. MRI shows medial meniscus extrusion of 4 mm and a radial cleft at the posterior horn root. What are the biomechanical consequences of this specific injury if left untreated?

. Decreased tibiofemoral contact area and increased peak contact pressure
. Increased tibiofemoral contact area and decreased peak contact pressure
. No significant change in contact pressure
. Immediate development of a fixed varus bony deformity
. Increased tension on the anterior cruciate ligament

Correct Answer & Explanation

. Decreased tibiofemoral contact area and increased peak contact pressure


Explanation

A posterior medial meniscus root tear completely disrupts circumferential hoop stresses, rendering the meniscus functionally equivalent to a total meniscectomy. This drastically decreases tibiofemoral contact area and increases peak contact pressures, leading to rapid chondrolysis.

Question 5106

Topic: 5. Sports Medicine

A 26-year-old athlete undergoes a single-bundle posterior cruciate ligament (PCL) reconstruction for chronic symptomatic instability. To best recreate the primary functional bundle, where should the femoral tunnel be positioned?

. Anterolateral aspect of the medial femoral condyle
. Posteromedial aspect of the medial femoral condyle
. Anteromedial aspect of the lateral femoral condyle
. Posterolateral aspect of the lateral femoral condyle
. Central intercondylar notch

Correct Answer & Explanation

. Anterolateral aspect of the medial femoral condyle


Explanation

Single-bundle PCL reconstruction aims to recreate the larger and stronger anterolateral (AL) bundle. The anatomic femoral footprint for the AL bundle is located high on the anterolateral aspect of the medial femoral condyle.

Question 5107

Topic: Shoulder & Hip Sports

A 20-year-old collegiate football lineman presents with recurrent anterior shoulder dislocations. A 3D CT scan reveals 27% anterior glenoid bone loss and an "off-track" Hill-Sachs lesion. What is the most appropriate surgical intervention?

. Arthroscopic Bankart repair
. Arthroscopic Bankart repair with Remplissage
. Latarjet procedure
. Open inferior capsular shift
. Latissimus dorsi tendon transfer

Correct Answer & Explanation

. Latarjet procedure


Explanation

Critical anterior glenoid bone loss (typically >20-25%) combined with an off-track Hill-Sachs lesion carries an unacceptably high failure rate with soft tissue stabilization alone. A bony augmentation procedure, such as the Latarjet procedure, is indicated.

Question 5108

Topic: 5. Sports Medicine

An 18-year-old hockey player sustains a concussion during a game. He rests for 3 days and becomes completely asymptomatic. According to current consensus guidelines (e.g., Berlin/Zurich), what is the prerequisite before he can begin a physical step-wise return-to-play protocol?

. A normal MRI of the brain
. Being asymptomatic for a minimum of 24 hours at rest
. Successful return to full academic activities without accommodations
. Normal scores on the SCAT-5 compared to baseline
. Clearance by a neurosurgeon

Correct Answer & Explanation

. Successful return to full academic activities without accommodations


Explanation

Current concussion guidelines mandate a "return to learn before return to play" approach. The student-athlete must be able to tolerate full academic school activities without symptom exacerbation before initiating the physical step-wise return-to-sport protocol.

Question 5109

Topic: 5. Sports Medicine

A 25-year-old professional soccer player reports chronic, debilitating groin pain exacerbated by kicking, sprinting, and sit-ups. Pain radiates into the perineum. Resisted hip adduction reproduces the pain. MRI shows no intra-articular hip pathology. What is the most common anatomical pathology associated with this condition?

. Avulsion of the rectus femoris at the AIIS
. Attenuation or tearing of the internal oblique aponeurosis and rectus abdominis insertion
. Tears of the iliopsoas tendon at the lesser trochanter
. Degenerative osteitis pubis
. Avulsion of the adductor magnus

Correct Answer & Explanation

. Attenuation or tearing of the internal oblique aponeurosis and rectus abdominis insertion


Explanation

The patient's presentation is classic for athletic pubalgia (core muscle injury). This condition most commonly involves tearing or attenuation of the conjoined tendon (internal oblique/transversus abdominis) and the rectus abdominis insertion at the pubic symphysis.

Question 5110

Topic: Knee Sports

A 16-year-old female experiences an acute lateral patellar dislocation while dancing, which spontaneously reduces. MRI demonstrates a complete, isolated tear of the medial patellofemoral ligament (MPFL). At what anatomical location does the MPFL most frequently tear in acute, primary patellar dislocations?

. Mid-substance of the ligament
. At its insertion on the superomedial patella
. At its femoral attachment near the adductor tubercle
. At its tibial attachment on the medial meniscus
. At its insertion on the medial epicondyle

Correct Answer & Explanation

. At its femoral attachment near the adductor tubercle


Explanation

In acute primary lateral patellar dislocations, the medial patellofemoral ligament (MPFL) most commonly fails at its femoral origin. This attachment is located in the anatomic saddle region between the adductor tubercle and the medial epicondyle.

Question 5111

Topic: 5. Sports Medicine

Six months following an ACL reconstruction using a bone-patellar tendon-bone autograft, a 22-year-old female athlete presents with a 15-degree extension deficit and an audible 'clunk' at terminal extension. MRI demonstrates a localized nodular soft-tissue mass anterior to the tibial tunnel within the intercondylar notch. What is the most appropriate definitive management?

. Rigid extension splinting for 6 weeks
. Arthroscopic excision of the lesion
. Revision ACL reconstruction
. Closed manipulation under anesthesia
. Open posterior capsular release

Correct Answer & Explanation

. Arthroscopic excision of the lesion


Explanation

The clinical presentation and imaging are classic for a cyclops lesion (localized anterior arthrofibrosis). Arthroscopic excision is the definitive treatment to restore terminal extension.

Question 5112

Topic: Shoulder & Hip Sports

A 22-year-old collegiate rugby player with a history of multiple anterior shoulder dislocations presents for surgical evaluation. A 3D CT scan reveals 26% anterior glenoid bone loss. Which of the following surgical procedures is most appropriate to minimize his recurrence risk?

. Arthroscopic Bankart repair alone
. Arthroscopic Bankart repair with Remplissage
. Open Latarjet procedure
. Open anterior capsular shift
. Arthroscopic superior capsular reconstruction

Correct Answer & Explanation

. Open Latarjet procedure


Explanation

Critical anterior glenoid bone loss (>20-25%) in a collision athlete results in a high failure rate with soft tissue stabilization alone. The Latarjet procedure (coracoid transfer) is the gold standard to restore the bony arc and provide a dynamic sling.

Question 5113

Topic: Knee Sports

A 28-year-old male presents with knee pain after sustaining a blow to the anteromedial tibia. Physical examination reveals a positive dial test showing 15 degrees of increased external rotation at 30 degrees of knee flexion compared to the contralateral knee. At 90 degrees of flexion, the external rotation normalizes to match the uninjured side. Which structure(s) is/are injured?

. Posterior cruciate ligament only
. Posterolateral corner only
. Both posterior cruciate ligament and posterolateral corner
. Anterior cruciate ligament only
. Medial collateral ligament

Correct Answer & Explanation

. Posterolateral corner only


Explanation

Increased external rotation at 30 degrees of flexion that normalizes at 90 degrees indicates an isolated posterolateral corner (PLC) injury. Combined PCL and PLC injuries typically show increased external rotation at both 30 and 90 degrees.

Question 5114

Topic: Knee Sports
During a medial patellofemoral ligament (MPFL) reconstruction for recurrent patellar instability, the surgeon uses fluoroscopy to identify Schöttle's point for the femoral tunnel. Where is this anatomic origin located radiographically?
. Distal and anterior to the medial epicondyle
. Proximal and posterior to the medial epicondyle
. Directly over the adductor tubercle
. Distal to the adductor tubercle on the posterior femoral condyle
. In the center of the trochlear groove

Correct Answer & Explanation

. Proximal and posterior to the medial epicondyle


Explanation

Schöttle's point describes the radiographic isometric origin of the MPFL. It is located just proximal and posterior to the medial epicondyle and slightly distal to the adductor tubercle.

Question 5115

Topic: Shoulder & Hip Sports

A 24-year-old professional hockey player presents with chronic groin pain exacerbated by hip flexion and internal rotation. Radiographs demonstrate an alpha angle of 75 degrees. Which of the following is true regarding this patient's pathomorphology?

. It represents global overcoverage of the acetabulum
. It is associated with primary retroversion of the acetabulum
. It typically damages the posteroinferior acetabular labrum
. It indicates a decreased anterior femoral head-neck offset
. It requires a periacetabular osteotomy for correction

Correct Answer & Explanation

. It indicates a decreased anterior femoral head-neck offset


Explanation

An elevated alpha angle (>50-55 degrees) is diagnostic of Cam-type femoroacetabular impingement (FAI). This pathomorphology indicates a loss of normal anterior femoral head-neck offset, leading to anterosuperior labral and chondral damage.

Question 5116

Topic: Shoulder & Hip Sports

A 65-year-old patient presents with a massive, chronically retracted tear of the supraspinatus and infraspinatus tendons. Electromyography demonstrates denervation potentials in the infraspinatus muscle. What is the predominant anatomic mechanism for this associated neuropathy?

. Direct compression by an associated paralabral cyst
. Traction injury of the suprascapular nerve at the suprascapular notch
. Traction injury of the axillary nerve in the quadrilateral space
. Compression of the suprascapular nerve at the spinoglenoid notch
. Avulsion of the upper trunk of the brachial plexus

Correct Answer & Explanation

. Traction injury of the suprascapular nerve at the suprascapular notch


Explanation

Massive, medially retracted posterosuperior rotator cuff tears alter the resting tension on the suprascapular nerve. The tethering effect primarily causes a traction neuropathy at the suprascapular notch due to 'bowstringing'.

Question 5117

Topic: 5. Sports Medicine

A 13-year-old female gymnast complains of vague lateral elbow pain. Radiographs show a radiolucency of the capitellum. MRI demonstrates a 1 cm osteochondral lesion with an intact overlying articular cartilage, no subchondral fluid, and open physes. What is the most appropriate initial management?

. Arthroscopic microfracture
. Osteochondral autograft transfer
. Cessation of gymnastics and upper extremity weight-bearing for 3-6 months
. Arthroscopic drilling of the lesion
. In situ screw fixation of the fragment

Correct Answer & Explanation

. Cessation of gymnastics and upper extremity weight-bearing for 3-6 months


Explanation

Stable osteochondritis dissecans (OCD) lesions of the capitellum in patients with open physes have a high potential for healing. Nonoperative management with strict rest and cessation of loading is the standard initial treatment.

Question 5118

Topic: 5. Sports Medicine
A collegiate wide receiver sustains a forceful hyperextension injury to his first metatarsophalangeal (MTP) joint on artificial turf. He has severe plantar ecchymosis and a positive Lachman test of the MTP joint. MRI reveals a complete tear of the plantar plate with 1 cm proximal migration of the sesamoids. What is the most appropriate management?
. Taping the toe in plantarflexion and immediate return to play
. Use of a carbon-fiber stiff-soled shoe for 4 weeks
. Intra-articular corticosteroid injection
. Surgical repair of the plantar plate complex
. Surgical excision of the tibial and fibular sesamoids

Correct Answer & Explanation

. Surgical repair of the plantar plate complex


Explanation

A Grade III turf toe injury involves complete disruption of the plantar plate with proximal sesamoid migration. In competitive athletes, surgical repair is indicated to restore push-off strength and prevent progressive hallux deformity.

Question 5119

Topic: Knee Sports
A 16-year-old female presents with recurrent lateral patellar instability and is scheduled for a medial patellofemoral ligament (MPFL) reconstruction. During the procedure, the femoral tunnel is inadvertently placed too proximal and anterior to Schöttle's point. What is the primary biomechanical consequence of this malpositioning?
. Increased graft tension in deep knee flexion
. Increased graft tension in full knee extension
. Development of patella baja
. Unrestricted lateral patellar translation in flexion
. Medial patellar subluxation in extension

Correct Answer & Explanation

. Increased graft tension in deep knee flexion


Explanation

Placing the femoral tunnel for MPFL reconstruction too proximal and anterior to Schöttle's point results in non-isometric behavior. This specifically causes increased graft tension during knee flexion, which can lead to postoperative stiffness, graft failure, or medial patellofemoral cartilage overload.

Question 5120

Topic: Knee Sports

A 19-year-old elite female soccer player undergoes primary anterior cruciate ligament (ACL) reconstruction. Which of the following clinical scenarios is considered the strongest indication for adding a concomitant lateral extra-articular tenodesis (LET) or anterolateral ligament (ALL) reconstruction?

. Grade 1 pivot shift on exam under anesthesia
. Concomitant medial meniscal body tear
. Patient age older than 25 years
. Grade 3 (high-grade) explosive pivot shift on exam under anesthesia
. Concomitant Grade 1 medial collateral ligament (MCL) sprain

Correct Answer & Explanation

. Grade 3 (high-grade) explosive pivot shift on exam under anesthesia


Explanation

Indications for concomitant LET or ALL reconstruction during ACL reconstruction include a high-grade pivot shift, chronic ACL deficiency, young age (<20 years) with high-level pivot-shift sports participation, and revision ACL reconstruction.