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Question 3181

Topic: Shoulder & Hip Sports

A 38-year-old man presents with a locked posterior shoulder dislocation following a seizure. CT scan confirms an anteromedial humeral head defect (reverse Hill-Sachs lesion) involving 35% of the articular surface. What is the most appropriate surgical management?

. Closed reduction and sling
. Arthroscopic posterior labral repair
. Open reduction and subscapularis transfer (McLaughlin procedure)
. Shoulder hemiarthroplasty
. Latarjet procedure

Correct Answer & Explanation

. Open reduction and subscapularis transfer (McLaughlin procedure)


Explanation

For reverse Hill-Sachs defects between 20-40%, transfer of the subscapularis or lesser tuberosity into the defect is indicated. This modified McLaughlin procedure restores anterior stability and prevents engagement.

Question 3182

Topic: Shoulder & Hip Sports

A 22-year-old collegiate rugby player presents with recurrent anterior shoulder instability. CT imaging demonstrates a 30% anterior glenoid bone defect. Which of the following is the most appropriate surgical management?

. Arthroscopic Bankart repair
. Open Bankart repair with inferior capsular shift
. Coracoid transfer (Latarjet procedure)
. Remplissage procedure alone
. Arthroscopic SLAP repair

Correct Answer & Explanation

. Coracoid transfer (Latarjet procedure)


Explanation

Critical glenoid bone loss (>20-25%) in a young collision athlete is a classic indication for a bony augmentation procedure, such as the Latarjet procedure, due to the unacceptably high failure rate of soft-tissue stabilization alone.

Question 3183

Topic: Shoulder & Hip Sports

A 34-year-old male presents to the ER after a generalized tonic-clonic seizure. His shoulder is locked in internal rotation. A modified axillary radiograph reveals a posterior shoulder dislocation with an anteromedial humeral head defect involving 30% of the articular surface. Which procedure is most appropriate?

. Closed reduction and external rotation bracing
. Arthroscopic posterior capsulorrhaphy
. Transfer of the lesser tuberosity into the defect (Modified McLaughlin)
. Latarjet procedure
. Total shoulder arthroplasty

Correct Answer & Explanation

. Transfer of the lesser tuberosity into the defect (Modified McLaughlin)


Explanation

For a reverse Hill-Sachs lesion involving 20% to 40% of the articular surface associated with posterior instability, a modified McLaughlin procedure (transfer of the lesser tuberosity or subscapularis into the defect) is indicated to prevent engagement.

Question 3184

Topic: 5. Sports Medicine
A 28-year-old professional athlete sustains a direct blow to the shoulder. Radiographs demonstrate a 150% superior displacement of the clavicle relative to the acromion. He is diagnosed with a Rockwood Type III AC joint dislocation. What is the generally recommended initial management?
. Acute surgical reconstruction of the coracoclavicular ligaments.
. Excision of the distal clavicle.
. Hook plate fixation.
. Nonoperative management with a sling and early rehabilitation.
. Figure-of-eight bracing for 6 weeks.

Correct Answer & Explanation

. Nonoperative management with a sling and early rehabilitation.


Explanation

Type III AC joint separations are generally treated nonoperatively initially, yielding functional results comparable to surgery with fewer complications. Surgery may be considered later for persistent symptoms, or acutely in highly demanding overhead athletes.

Question 3185

Topic: Shoulder & Hip Sports

A 40-year-old male presents with an unprovoked seizure resulting in a right posterior shoulder dislocation. Imaging reveals an anteromedial humeral head defect (reverse Hill-Sachs lesion) involving 30% of the articular surface. What is the most appropriate surgical management to prevent recurrent instability?

. Arthroscopic posterior Bankart repair alone
. Latarjet procedure
. Transfer of the lesser tuberosity or subscapularis into the defect
. Open reduction and internal fixation of the humeral head defect
. Anatomic total shoulder arthroplasty

Correct Answer & Explanation

. Transfer of the lesser tuberosity or subscapularis into the defect


Explanation

For a reverse Hill-Sachs lesion involving 20% to 40% of the articular surface, filling the defect via transfer of the lesser tuberosity or subscapularis tendon (McLaughlin or modified McLaughlin procedure) is the recommended treatment to prevent engagement.

Question 3186

Topic: Shoulder & Hip Sports

A 22-year-old collegiate rugby player presents with recurrent anterior shoulder instability. An MRI reveals a 25% bony Bankart lesion of the anterior glenoid.

Which of the following surgical interventions provides the most reliable long-term stability for this patient?

. Arthroscopic labral repair with suture anchors
. Open Bankart repair with capsular shift
. Latarjet procedure
. Arthroscopic remplissage
. Putti-Platt procedure

Correct Answer & Explanation

. Latarjet procedure


Explanation

The Latarjet procedure is indicated for patients with recurrent anterior shoulder instability and significant glenoid bone loss (>20-25%). Soft tissue repairs alone in this setting have an unacceptably high failure rate.

Question 3187

Topic: 5. Sports Medicine

A 48-year-old manual laborer sustains a Type II SLAP tear. Nonoperative management fails. What is the most appropriate surgical treatment to minimize postoperative stiffness and allow a predictable return to work?

. Arthroscopic SLAP repair with anchors
. Biceps tenodesis
. Biceps tenotomy
. Diagnostic arthroscopy with debridement only
. Coracoacromial ligament release

Correct Answer & Explanation

. Biceps tenodesis


Explanation

In patients older than 40-45 years, biceps tenodesis yields more predictable pain relief and lower complication rates compared to SLAP repair. SLAP repair in older patients has a high risk of postoperative stiffness and persistent pain.

Question 3188

Topic: Shoulder & Hip Sports

A 22-year-old collegiate rugby player presents with recurrent anterior shoulder instability after a primary traumatic dislocation. A 3D-CT scan reveals 25% anterior glenoid bone loss. What is the most appropriate definitive surgical management?

. Arthroscopic Bankart repair with capsulolabral shift
. Open Latarjet procedure
. Arthroscopic remplissage
. Open Bankart repair
. Putti-Platt procedure

Correct Answer & Explanation

. Open Latarjet procedure


Explanation

Glenoid bone loss exceeding 20-25% is a classic contraindication for isolated soft tissue repair (Bankart). The Latarjet procedure (coracoid transfer) is the standard of care to restore anterior stability in contact athletes with critical bone loss.

Question 3189

Topic: Shoulder & Hip Sports

A 55-year-old man presents with anterior shoulder pain following a fall. Physical examination reveals a positive lift-off test, a positive belly-press test, and passively increased external rotation compared to the contralateral side. What is the most likely diagnosis?

. Supraspinatus tendon tear
. Subscapularis tendon tear
. Teres minor tendon tear
. Infraspinatus tendon tear
. Superior labrum anterior to posterior (SLAP) tear

Correct Answer & Explanation

. Subscapularis tendon tear


Explanation

A positive lift-off test and belly-press test are highly specific for a subscapularis tendon tear. Increased passive external rotation also occurs due to the loss of the anterior restraint provided by the intact subscapularis.

Question 3190

Topic: Knee Sports

A 13-year-old male gymnast presents with lateral elbow pain and clicking. MRI demonstrates osteochondritis dissecans (OCD) of the capitellum with an unstable, detached osteochondral fragment resting in situ. What is the most appropriate management?

. Rest and strict cessation of gymnastics for 6 months
. Arthroscopic fragment excision and marrow stimulation (microfracture)
. In situ retrograde drilling of the capitellum
. Corticosteroid injection into the radiocapitellar joint
. Capitellar closing wedge osteotomy

Correct Answer & Explanation

. Arthroscopic fragment excision and marrow stimulation (microfracture)


Explanation

In an adolescent with capitellar OCD demonstrating an unstable or detached fragment on MRI, surgical intervention is indicated. Arthroscopic fragment excision with microfracture of the base, or fragment fixation if amenable, is the standard of care.

Question 3191

Topic: Shoulder & Hip Sports

A 45-year-old construction worker with chronic anterior shoulder pain exhibits a positive Speed's test. MRI reveals a Type II SLAP lesion with significant macroscopic degeneration of the biceps anchor. What is the most reliable surgical option?

. Debridement of the superior labrum
. Arthroscopic SLAP repair with suture anchors
. Biceps tenotomy
. Biceps tenodesis
. Coracoid transfer

Correct Answer & Explanation

. Biceps tenodesis


Explanation

In patients over 40 or heavy laborers with Type II SLAP tears and concurrent biceps anchor degeneration, biceps tenodesis provides more reliable pain relief. SLAP repair in this demographic has a high rate of postoperative stiffness and persistent pain.

Question 3192

Topic: Shoulder & Hip Sports

A 22-year-old male presents with recurrent anterior shoulder instability. A pre-operative 3D CT scan demonstrates 28% anterior glenoid bone loss. Which of the following procedures provides the most reliable long-term stability?

. Arthroscopic Bankart repair
. Open Bankart repair with inferior capsular shift
. Latarjet procedure (coracoid transfer)
. Arthroscopic remplissage alone
. Putti-Platt procedure

Correct Answer & Explanation

. Latarjet procedure (coracoid transfer)


Explanation

In the setting of significant anterior glenoid bone loss (>20-25%), soft tissue stabilization alone has an unacceptably high failure rate. A bone-block procedure, such as the Latarjet, is required to restore the glenoid articular arc and provide a dynamic sling effect.

Question 3193

Topic: Shoulder & Hip Sports

During arthroscopic repair of a posterior SLAP tear, the surgeon must be cautious when placing suture anchors or drilling into the posterior glenoid neck. Penetrating the posterior glenoid neck medially by more than what distance puts the suprascapular nerve at significant risk?

. 1 to 2 mm
. 5 to 7 mm
. 10 to 15 mm
. 25 to 30 mm
. 35 to 40 mm

Correct Answer & Explanation

. 10 to 15 mm


Explanation

The suprascapular nerve courses around the spinoglenoid notch approximately 10 to 20 mm medial to the posterior glenoid rim. Drilling or anchor placement that penetrates deeper than 10-15 mm in this area risks direct nerve injury.

Question 3194

Topic: Shoulder & Hip Sports

A 22-year-old rugby player presents with recurrent anterior shoulder instability. A CT scan of the shoulder reveals 25% anterior glenoid bone loss. The surgeon plans a Latarjet procedure. This procedure provides dynamic anterior stability through a 'sling effect' primarily involving the interaction between the lower subscapularis and which of the following structures?

. Conjoined tendon
. Coracoacromial ligament
. Long head of the biceps tendon
. Pectoralis minor tendon
. Infraspinatus tendon

Correct Answer & Explanation

. Conjoined tendon


Explanation

The Latarjet procedure involves transferring the coracoid process along with the attached conjoined tendon. When the arm is abducted and externally rotated, the conjoined tendon acts as a dynamic sling across the inferior subscapularis and anterior-inferior capsule, providing critical stability.

Question 3195

Topic: 5. Sports Medicine

Which of the following bone graft substitutes possesses osteoconductive and osteoinductive properties, but entirely lacks osteogenic potential?

. Cancellous autograft
. Vascularized fibular autograft
. Demineralized bone matrix (DBM)
. Calcium phosphate cement
. Fresh frozen structural allograft

Correct Answer & Explanation

. Demineralized bone matrix (DBM)


Explanation

Demineralized bone matrix (DBM) contains natural growth factors like BMPs (providing osteoinduction) and a collagenous scaffold (providing osteoconduction). However, because it is entirely acellular, it lacks osteogenic capability, which requires living osteoprogenitor cells.

Question 3196

Topic: 5. Sports Medicine

Which of the following bone graft options possesses all three essential properties for bone healing: osteoconduction, osteoinduction, and osteogenesis?

. Demineralized bone matrix (DBM)
. Cancellous allograft
. Recombinant human BMP-2
. Iliac crest bone autograft
. Tricalcium phosphate ceramics

Correct Answer & Explanation

. Iliac crest bone autograft


Explanation

Autograft (such as iliac crest) is the gold standard because it provides an osteoconductive scaffold, osteoinductive growth factors, and osteogenic live cells. Allografts and synthetics typically lack live osteoprogenitor cells (osteogenesis).

Question 3197

Topic: Knee Sports

The anterior cruciate ligament (ACL) is composed of two main functional bundles. During deep knee flexion, which bundle is under the most tension, and what is its primary biomechanical role?

. Posterolateral bundle; resists anterior translation
. Posterolateral bundle; resists internal rotation
. Anteromedial bundle; resists anterior translation
. Anteromedial bundle; resists valgus stress
. Intermediate bundle; resists hyperextension

Correct Answer & Explanation

. Anteromedial bundle; resists anterior translation


Explanation

The anteromedial bundle of the ACL tightens in flexion and is the primary restraint to anterior tibial translation. The posterolateral bundle tightens in extension and acts primarily to resist rotational loads.

Question 3198

Topic: Knee Sports
Following a complete rupture of the anterior cruciate ligament (ACL), the initial phase of biological healing features a hematoma. Which type of collagen is predominantly synthesized by fibroblasts during the early proliferative phase of ligament healing?
. Type I
. Type II
. Type III
. Type IX
. Type X

Correct Answer & Explanation

. Type III


Explanation

During the early proliferative phase of ligament and tendon healing, fibroblasts predominantly synthesize disorganized Type III collagen. Over the subsequent remodeling and maturation phases, this is gradually replaced by stronger, longitudinally aligned Type I collagen.

Question 3199

Topic: Knee Sports

The posteromedial approach to the knee is often utilized for repairing tibial avulsions of the posterior cruciate ligament (PCL) or accessing the posterior horn of the medial meniscus. This approach develops an interval between which of the following muscle bellies?

. Semitendinosus and Gracilis
. Semimembranosus and Medial head of gastrocnemius
. Sartorius and Vastus medialis
. Medial head of gastrocnemius and Soleus
. Biceps femoris and Lateral head of gastrocnemius

Correct Answer & Explanation

. Semimembranosus and Medial head of gastrocnemius


Explanation

The posteromedial approach to the knee utilizes the interval between the semimembranosus and the medial head of the gastrocnemius. Protecting the medial sural cutaneous nerve and the saphenous nerve and vein is important during the superficial dissection.

Question 3200

Topic: 5. Sports Medicine

When establishing a posterolateral portal during knee arthroscopy, the surgeon makes an incision posterior to the fibular collateral ligament. The incision must remain strictly anterior to the biceps femoris tendon and superior to the fibular head to prevent injury to which structure?

. Saphenous nerve
. Tibial nerve
. Common peroneal nerve
. Deep peroneal nerve
. Sural nerve

Correct Answer & Explanation

. Common peroneal nerve


Explanation

The common peroneal nerve crosses the fibular neck just inferior to the fibular head and deep to the biceps femoris tendon. Establishing a posterolateral portal inferior or posterior to these landmarks risks severe injury to this nerve.