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Question 3361

Topic: Knee Sports

During an anatomic reconstruction of the posterolateral corner (PLC) of the knee, accurate placement of the fibular collateral ligament (FCL) femoral tunnel is crucial. Relative to the lateral epicondyle, where is the native femoral footprint of the FCL located?

. 1.4 mm proximal and 3.1 mm posterior
. 3.1 mm distal and 1.4 mm anterior
. Directly over the lateral epicondyle apex
. 5.0 mm distal to the popliteus sulcus
. Anterior to the popliteus insertion

Correct Answer & Explanation

. 1.4 mm proximal and 3.1 mm posterior


Explanation

The anatomic femoral footprint of the fibular collateral ligament (FCL) is situated approximately 1.4 mm proximal and 3.1 mm posterior to the lateral epicondyle. Accurate placement ensures proper isometric tensioning of the graft during PLC reconstruction.

Question 3362

Topic: Shoulder & Hip Sports

A 17-year-old female gymnast complains of bilateral shoulder pain and a sensation of the shoulders 'sliding out' of joint. Exam reveals a positive sulcus sign, anterior apprehension, and generalized ligamentous laxity (Beighton score 7/9). What is the most appropriate initial treatment?

. Arthroscopic capsular plication
. Open inferior capsular shift
. Thermal capsulorrhaphy
. Prolonged physical therapy emphasizing periscapular and rotator cuff strengthening
. Latarjet procedure

Correct Answer & Explanation

. Prolonged physical therapy emphasizing periscapular and rotator cuff strengthening


Explanation

Multidirectional instability (MDI) is typically atraumatic and bilateral, common in patients with generalized hyperlaxity. The cornerstone of treatment is a prolonged (minimum 6 months) physical therapy program focusing on dynamic stabilization via the rotator cuff and periscapular muscles.

Question 3363

Topic: Shoulder & Hip Sports

The arthroscopic Remplissage procedure is utilized as an adjunct to a Bankart repair in cases of significant, engaging Hill-Sachs lesions without critical glenoid bone loss. Which anatomical structure is tenodesed into the humeral defect during this procedure?

. Supraspinatus tendon
. Subscapularis tendon
. Infraspinatus tendon
. Teres minor tendon
. Long head of the biceps tendon

Correct Answer & Explanation

. Infraspinatus tendon


Explanation

The Remplissage procedure involves capsulotenodesis of the infraspinatus tendon and posterior capsule into a large Hill-Sachs defect. This essentially makes the defect extra-articular and prevents it from engaging on the anterior glenoid rim during abduction and external rotation.

Question 3364

Topic: 5. Sports Medicine

During the first 6 weeks following an ACL reconstruction utilizing a quadrupled hamstring autograft, what represents the weakest biomechanical link in the reconstructed knee?

. The mid-substance of the graft
. The graft-fixation interface
. The intra-tunnel graft-bone healing interface
. The tibial tunnel bone wall
. The femoral tunnel bone wall

Correct Answer & Explanation

. The graft-fixation interface


Explanation

In the early postoperative phase (first 6 to 12 weeks) following soft-tissue ACL reconstruction, the initial fixation device (the graft-fixation interface) represents the weakest biomechanical link. Over time, biological incorporation occurs, shifting the weakest point to the graft mid-substance.

Question 3365

Topic: 5. Sports Medicine

During the harvest of a hamstring autograft for ACL reconstruction, the surgeon utilizes an oblique incision over the pes anserinus. The patient later reports an area of numbness over the anterolateral aspect of the proximal leg. Which nerve was most likely injured during the harvest?

. Infrapatellar branch of the saphenous nerve
. Sural nerve
. Deep peroneal nerve
. Superficial peroneal nerve
. Posterior tibial nerve

Correct Answer & Explanation

. Infrapatellar branch of the saphenous nerve


Explanation

The infrapatellar branch of the saphenous nerve courses anteriorly and laterally across the proximal tibia. It is highly susceptible to iatrogenic transection or traction injury during the surgical approach for hamstring graft harvesting, leading to anterolateral leg numbness.

Question 3366

Topic: 5. Sports Medicine

A 24-year-old athlete presents with progressive loss of knee flexion and anterior knee pain 6 months after an anterior cruciate ligament (ACL) reconstruction using a bone-patellar tendon-bone autograft. Radiographs demonstrate that the femoral tunnel was placed anterior to the anatomic footprint (high and anterior in the notch). What is the primary biomechanical consequence of this tunnel malposition?

. The graft becomes tight in extension and loose in flexion.
. The graft becomes tight in flexion and loose in extension.
. The graft prevents terminal extension due to roof impingement.
. The graft restricts internal rotation but allows pathologic anterior translation.
. The graft excessively constrains the posterior cruciate ligament.

Correct Answer & Explanation

. The graft becomes tight in flexion and loose in extension.


Explanation

An anteriorly placed femoral tunnel creates a cam effect, causing the ACL graft to become tight in flexion and loose in extension. This commonly presents as a loss of terminal knee flexion and subsequent graft stretch or failure.

Question 3367

Topic: Shoulder & Hip Sports

A 35-year-old man presents to the emergency department after a first-time seizure. His arm is locked in internal rotation and adduction. Radiographs reveal a posterior shoulder dislocation. A subsequent CT scan shows an anteromedial humeral head defect involving 30% of the articular surface. Following closed reduction, the shoulder remains unstable in internal rotation. What is the most appropriate surgical management?

. Arthroscopic posterior Bankart repair
. Coracoid transfer to the posterior glenoid
. Transfer of the lesser tuberosity into the defect
. Open reduction and internal fixation of the greater tuberosity
. Arthroscopic remplissage

Correct Answer & Explanation

. Transfer of the lesser tuberosity into the defect


Explanation

For a reverse Hill-Sachs defect involving 20% to 40% of the articular surface, transferring the lesser tuberosity with the attached subscapularis into the defect (modified McLaughlin procedure) prevents the defect from engaging the posterior glenoid rim.

Question 3368

Topic: Knee Sports

A 22-year-old collegiate soccer player sustains a twisting injury to his knee. On examination, he has a normal Lachman test and normal posterior drawer test. The dial test shows 15 degrees of increased external rotation of the tibia at 30 degrees of knee flexion compared to the contralateral side, but symmetric external rotation at 90 degrees of flexion. Which structure is most likely injured?

. Anterior cruciate ligament
. Posterior cruciate ligament
. Posterolateral corner
. Medial collateral ligament
. Popliteomeniscal fascicles

Correct Answer & Explanation

. Posterolateral corner


Explanation

An isolated posterolateral corner (PLC) injury presents with increased external rotation at 30 degrees of flexion but symmetric rotation at 90 degrees. If the posterior cruciate ligament (PCL) were also injured, the dial test would be positive at both 30 and 90 degrees.

Question 3369

Topic: Shoulder & Hip Sports

A 20-year-old rugby player evaluates for recurrent anterior shoulder instability. A 3D CT scan reveals 25% anterior glenoid bone loss. MRI shows an engaging Hill-Sachs lesion. Based on the glenoid track concept, which of the following procedures is most appropriate to minimize the risk of recurrent instability?

. Arthroscopic Bankart repair alone
. Arthroscopic Bankart repair with Remplissage
. Coracoid transfer (Latarjet procedure)
. Anterior opening wedge glenoid osteotomy
. Superior capsular reconstruction

Correct Answer & Explanation

. Coracoid transfer (Latarjet procedure)


Explanation

Critical glenoid bone loss (>20%) requires bony augmentation, such as the Latarjet procedure, to restore the glenoid arc and stability. Arthroscopic Bankart with Remplissage is reserved for subcritical bone loss with an off-track Hill-Sachs lesion.

Question 3370

Topic: Shoulder & Hip Sports

A 23-year-old professional baseball pitcher complains of vague posterior shoulder pain during the late cocking phase of throwing. Physical examination reveals a 25-degree glenohumeral internal rotation deficit (GIRD) compared to the contralateral side, and a positive peel-back sign on arthroscopic simulation. What is the recommended initial management?

. Arthroscopic Type II SLAP repair
. Arthroscopic posterior capsule release
. Anterior capsulolabral plication
. Sleeper stretches and posterior cuff strengthening
. Subpectoral biceps tenodesis

Correct Answer & Explanation

. Sleeper stretches and posterior cuff strengthening


Explanation

Symptomatic GIRD with internal impingement and posterior labral peel-back in throwing athletes initially responds well to a stretching program targeting the posterior capsule (sleeper stretches). Operative intervention is reserved only for refractory cases after a prolonged course of therapy.

Question 3371

Topic: Shoulder & Hip Sports

A 20-year-old collegiate rugby player presents with recurrent anterior shoulder instability. A 3D CT scan reveals 25% anterior glenoid bone loss. What is the most appropriate surgical management?

. Arthroscopic Bankart repair
. Open Bankart repair
. Arthroscopic Remplissage
. Latarjet procedure
. Capsular shift

Correct Answer & Explanation

. Latarjet procedure


Explanation

The Latarjet procedure (coracoid transfer) is indicated for recurrent anterior shoulder instability in the presence of critical glenoid bone loss (>20-25%). Soft tissue stabilization alone in this setting has an unacceptably high failure rate.

Question 3372

Topic: Shoulder & Hip Sports

A 32-year-old recreational volleyball player is diagnosed with a Type II SLAP tear. What differentiates a Type II from a Type I SLAP tear?

. Fraying of the superior labrum with an intact biceps anchor
. Detachment of the superior labrum and biceps anchor from the glenoid
. Bucket-handle tear of the superior labrum with an intact biceps anchor
. Bucket-handle tear of the superior labrum with detachment of the biceps anchor
. Involvement of the middle glenohumeral ligament

Correct Answer & Explanation

. Detachment of the superior labrum and biceps anchor from the glenoid


Explanation

A Type II SLAP tear involves detachment of the superior labrum and the long head of the biceps anchor from the superior glenoid. Type I is merely degenerative fraying with an intact anchor.

Question 3373

Topic: Shoulder & Hip Sports

A 28-year-old male volleyball player presents with painless weakness in external rotation of his right shoulder. MRI reveals a paralabral cyst in the spinoglenoid notch. Which muscle is predominantly affected?

. Supraspinatus
. Infraspinatus
. Teres minor
. Subscapularis
. Deltoid

Correct Answer & Explanation

. Infraspinatus


Explanation

A cyst in the spinoglenoid notch typically compresses the suprascapular nerve after it has already innervated the supraspinatus. This leads to isolated atrophy and weakness of the infraspinatus muscle.

Question 3374

Topic: 5. Sports Medicine

Compared to operative repair, functional bracing and early weight-bearing (non-operative management) of acute Achilles tendon ruptures in recreational athletes has been shown to result in:

. Significantly higher rerupture rates
. Higher rates of deep infection
. Similar functional outcomes and rerupture rates
. Decreased plantar flexion strength by 50%
. Increased risk of sural nerve injury

Correct Answer & Explanation

. Similar functional outcomes and rerupture rates


Explanation

Recent level I evidence demonstrates that with modern functional rehabilitation protocols, non-operative management yields similar functional outcomes and rerupture rates compared to surgical repair, while completely avoiding surgical site complications.

Question 3375

Topic: Knee Sports
During reconstruction of the medial patellofemoral ligament (MPFL), where is the anatomic femoral attachment (Schöttle's point) located?
. Anterior to the medial epicondyle and distal to the adductor tubercle
. Posterior to the medial epicondyle and proximal to the adductor tubercle
. Just proximal to the medial epicondyle and distal to the adductor tubercle
. Directly on the adductor tubercle
. Posterior to the adductor tubercle

Correct Answer & Explanation

. Posterior to the medial epicondyle and proximal to the adductor tubercle


Explanation

The anatomic femoral origin of the MPFL (Schöttle's point) is located just proximal and posterior to the medial epicondyle, and just distal to the adductor tubercle.

Question 3376

Topic: Knee Sports

What is the most common location for an osteochondritis dissecans (OCD) lesion in the knee?

. Medial aspect of the medial femoral condyle
. Lateral aspect of the medial femoral condyle
. Lateral aspect of the lateral femoral condyle
. Medial aspect of the lateral femoral condyle
. Patellar articular surface

Correct Answer & Explanation

. Lateral aspect of the medial femoral condyle


Explanation

The classic and most common location for a knee OCD lesion is the lateral aspect of the medial femoral condyle (LAME: Lateral Aspect Medial Epicondyle/Condyle).

Question 3377

Topic: Knee Sports
A 30-year-old male sustains a knee dislocation resulting in an acute Grade III MCL tear and a complete ACL rupture. What is the generally recommended initial management for the MCL injury?
. Immediate primary repair of the MCL with simultaneous ACL reconstruction
. Hinged knee brace for 6 weeks, followed by delayed ACL reconstruction
. Immediate ACL reconstruction with non-operative MCL management
. Simultaneous allograft reconstruction of both the ACL and MCL acutely
. Primary repair of the ACL and MCL

Correct Answer & Explanation

. Hinged knee brace for 6 weeks, followed by delayed ACL reconstruction


Explanation

For combined ACL and Grade III MCL tears, current evidence supports non-operative management of the MCL with a hinged brace first. This allows the MCL to heal, followed by delayed ACL reconstruction to minimize the risk of arthrofibrosis.

Question 3378

Topic: Knee Sports

A 24-year-old passenger sustains a dashboard injury in a motor vehicle collision.

Examination reveals a positive posterior drawer test. At what angle of knee flexion is the posterior cruciate ligament (PCL) the primary restraint to posterior tibial translation?

. 0 degrees
. 30 degrees
. 60 degrees
. 90 degrees
. 120 degrees

Correct Answer & Explanation

. 90 degrees


Explanation

The PCL provides its maximum restraint to posterior tibial translation at 90 degrees of knee flexion. The posterior drawer test is therefore most accurate when performed at this angle.

Question 3379

Topic: Shoulder & Hip Sports

During a routine arthroscopic rotator cuff repair, a patient is noted to have an isolated, complete rupture of the subscapularis tendon. Which physical examination test would have been most definitively positive preoperatively?

. Jobe's (empty can) test
. Hornblower's sign
. Bear hug test
. O'Brien's active compression test
. Speed's test

Correct Answer & Explanation

. Bear hug test


Explanation

The Bear hug test, lift-off test, and belly-press test are specific for subscapularis pathology. Hornblower's assesses the teres minor, while Jobe's is specific for the supraspinatus.

Question 3380

Topic: Shoulder & Hip Sports

A 22-year-old collegiate baseball pitcher reports deep shoulder pain during the late-cocking phase of throwing. He demonstrates a positive O'Brien test and a positive pronated load test. What is the most likely pathophysiologic mechanism of this injury?

. Tension overload of the anterior band of the inferior glenohumeral ligament
. Peel-back of the superior labrum from torsional forces of the biceps anchor
. Internal impingement of the supraspinatus tendon against the posterosuperior glenoid
. Eccentric overload of the posterior rotator cuff during deceleration
. Traction injury to the suprascapular nerve at the suprascapular notch

Correct Answer & Explanation

. Peel-back of the superior labrum from torsional forces of the biceps anchor


Explanation

The peel-back mechanism occurs during the late cocking phase of throwing (abduction and maximal external rotation), causing a torsional force at the biceps anchor that peels the superior labrum off the glenoid rim. This leads to a type II SLAP tear.