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Question 1161

Topic: Shoulder & Hip Sports

A 24-year-old professional baseball pitcher complains of deep shoulder pain, decreased throwing velocity, and pain specifically during the late cocking phase. Clinical examination reveals a positive O'Brien test. What pathomechanical process is most commonly responsible for this patient's condition?

. Anterior translation of the humeral head during acceleration
. Posterior capsular contracture causing a peel-back of the superior labrum
. Inferior capsular laxity resulting in multidirectional instability
. Coracoacromial ligament tightness
. Subscapularis insufficiency during the follow-through phase

Correct Answer & Explanation

. Anterior translation of the humeral head during acceleration


Explanation

In overhead throwers, a contracted posteroinferior capsule leads to a posterosuperior shift of the humeral head in maximum abduction and external rotation. This creates a peel-back force on the biceps anchor, resulting in a type II SLAP tear.

Question 1162

Topic: Shoulder & Hip Sports

A 28-year-old male presents with recurrent apprehension 1 year after undergoing a Latarjet procedure. CT imaging reveals significant resorption of the coracoid graft. What technical error is most commonly associated with graft osteolysis following a Latarjet procedure?

. Low-grade infection
. Overhang of the graft lateral to the glenoid face
. Medial placement of the graft
. Use of titanium instead of bioabsorbable screws
. Failure to repair an associated SLAP tear

Correct Answer & Explanation

. Low-grade infection


Explanation

Medial placement of the coracoid graft deprives it of mechanical loading from the humeral head. According to Wolff's law, this stress shielding leads to graft resorption and osteolysis, which can result in recurrent instability.

Question 1163

Topic: Shoulder & Hip Sports

A 22-year-old male presents with recurrent anterior shoulder dislocations. Diagnostic arthroscopy reveals an anterior glenoid bone defect of 15% and a large, engaging Hill-Sachs lesion. Which of the following is the most appropriate surgical management?

. Arthroscopic isolated Bankart repair
. Arthroscopic Bankart repair with Remplissage
. Latarjet procedure
. Open inferior capsular shift
. Humeral head structural allograft

Correct Answer & Explanation

. Arthroscopic isolated Bankart repair


Explanation

For patients with subcritical glenoid bone loss (less than 20%) but a substantial, engaging Hill-Sachs lesion (an off-track lesion), an arthroscopic Bankart repair combined with a Remplissage (infraspinatus tenodesis into the defect) effectively prevents engagement and restores stability.

Question 1164

Topic: Shoulder & Hip Sports

A 22-year-old collegiate rugby player presents with recurrent anterior shoulder dislocations. Advanced imaging demonstrates an anteroinferior labral tear and 26% anterior glenoid bone loss. Which of the following is the most appropriate surgical management to minimize the risk of recurrent instability?

. Arthroscopic Bankart repair with suture anchors
. Open Bankart repair with inferior capsular shift
. Latarjet procedure (coracoid transfer)
. Arthroscopic remplissage alone
. Biceps tenodesis

Correct Answer & Explanation

. Arthroscopic Bankart repair with suture anchors


Explanation

Glenoid bone loss greater than 20-25% is a classic indication for a bony augmentation procedure, most commonly the Latarjet procedure. Soft tissue repairs (Bankart) have an unacceptably high failure rate in the presence of critical anterior bone loss.

Question 1165

Topic: Shoulder & Hip Sports

A 24-year-old male overhead athlete undergoes arthroscopic evaluation for recurrent anterior shoulder instability. Findings include an off-track, engaging Hill-Sachs lesion and 12% anterior glenoid bone loss. Which of the following is the most appropriate management alongside an arthroscopic Bankart repair?

. Latarjet procedure
. Arthroscopic remplissage
. Humeral head resurfacing
. Distal tibial allograft reconstruction
. Iliac crest bone grafting of the glenoid

Correct Answer & Explanation

. Latarjet procedure


Explanation

For engaging, off-track Hill-Sachs lesions with subcritical glenoid bone loss (typically <20%), an arthroscopic Bankart repair combined with remplissage (infraspinatus tenodesis into the humeral defect) is indicated. This prevents the defect from engaging the anterior glenoid rim.

Question 1166

Topic: Shoulder & Hip Sports

A 40-year-old man presents to the emergency department with severe shoulder pain and the arm locked in internal rotation after sustaining a severe electrical shock. Radiographs confirm a posterior shoulder dislocation with an anteromedial humeral head impaction fracture involving 25% of the articular surface. Following closed reduction, what is the preferred definitive surgical intervention?

. Latarjet procedure
. Arthroscopic posterior labral repair
. McLaughlin procedure or modification
. Glenoid retroversion osteotomy
. Total shoulder arthroplasty

Correct Answer & Explanation

. Latarjet procedure


Explanation

Posterior shoulder dislocations commonly cause a reverse Hill-Sachs lesion. For defects involving 20-40% of the articular surface, a McLaughlin procedure (transfer of the lesser tuberosity or subscapularis into the defect) provides excellent stability and prevents engagement.

Question 1167

Topic: Shoulder & Hip Sports

A 28-year-old man undergoes a Latarjet procedure for refractory anterior shoulder instability. Postoperatively, he complains of weakness in elbow flexion and numbness over the lateral aspect of his forearm. Which nerve was most likely injured during the procedure?

. Axillary nerve
. Radial nerve
. Musculocutaneous nerve
. Median nerve
. Ulnar nerve

Correct Answer & Explanation

. Axillary nerve


Explanation

The musculocutaneous nerve is at significant risk during the Latarjet procedure when retracting the conjoined tendon or mobilizing the coracoid. It typically penetrates the coracobrachialis 5 to 8 cm distal to the coracoid tip.

Question 1168

Topic: Shoulder & Hip Sports

A 45-year-old manual laborer presents with deep anterior shoulder pain. Clinical examination reveals a positive O'Brien's test. MRI arthrogram demonstrates a Type II SLAP tear without concomitant rotator cuff pathology. Based on current evidence, what is the most appropriate surgical management for this patient?

. Arthroscopic SLAP repair with suture anchors
. Biceps tenodesis
. Arthroscopic biceps tenotomy
. Simple debridement of the superior labrum
. Coracoacromial ligament release

Correct Answer & Explanation

. Arthroscopic SLAP repair with suture anchors


Explanation

In patients over the age of 40, especially manual laborers, primary biceps tenodesis is preferred over SLAP repair for Type II SLAP lesions. SLAP repair in this demographic is associated with higher rates of postoperative stiffness, persistent pain, and need for revision.

Question 1169

Topic: Shoulder & Hip Sports

Which of the following factors is most strongly associated with an increased risk of recurrent instability following an isolated arthroscopic Bankart repair for anterior shoulder instability?

. Patient age greater than 35 years
. Anterior glenoid bone loss greater than 20%
. Female gender
. Presence of a concurrent SLAP lesion
. Mechanism of injury being a low-energy fall

Correct Answer & Explanation

. Patient age greater than 35 years


Explanation

Significant anterior glenoid bone loss (>20-25%) alters the articular geometry and is the strongest predictor of failure for soft-tissue stabilization alone (Bankart repair). Such bone loss mandates a bony augmentation procedure like the Latarjet.

Question 1170

Topic: Shoulder & Hip Sports

A 19-year-old female gymnast complains of bilateral shoulder pain and feeling like her shoulders slip out of place. Examination reveals generalized ligamentous laxity, a positive sulcus sign, and apprehension in anterior, posterior, and inferior directions. What is the most appropriate initial treatment?

. Arthroscopic inferior capsular shift
. Open inferior capsular shift
. Physical therapy focusing on dynamic stabilizers and periscapular strengthening
. Bilateral Latarjet procedures
. Arthroscopic Bankart repairs

Correct Answer & Explanation

. Arthroscopic inferior capsular shift


Explanation

Multidirectional instability (MDI) typically presents in young females with generalized laxity. The mainstay of initial treatment is a prolonged course (at least 6 months) of physical therapy targeting the dynamic stabilizers (rotator cuff) and periscapular musculature.

Question 1171

Topic: Shoulder & Hip Sports

A 22-year-old elite baseball pitcher complains of posterior shoulder pain exclusively during the late cocking phase of throwing. Arthroscopic evaluation reveals undersurface fraying of the posterior supraspinatus tendon and a peel-back lesion of the posterosuperior labrum. What is the primary diagnosis?

. Subcoracoid impingement
. Subacromial impingement
. Internal impingement
. Parsonage-Turner syndrome
. Quadrilateral space syndrome

Correct Answer & Explanation

. Subcoracoid impingement


Explanation

Internal impingement occurs in overhead athletes during the late cocking phase (maximum abduction and external rotation). The greater tuberosity impinges against the posterosuperior glenoid, leading to characteristic articular-sided rotator cuff tears and posterosuperior labral pathology.

Question 1172

Topic: Shoulder & Hip Sports

A 22-year-old collegiate rugby player with a history of recurrent anterior shoulder instability presents for definitive management. A 3D computed tomography (CT) scan reveals a 27% anterior glenoid bone loss with an associated engaging Hill-Sachs lesion. Which of the following is the most appropriate surgical intervention?

. Arthroscopic Bankart repair
. Open Bankart repair with inferior capsular shift
. Coracoid transfer (Latarjet procedure)
. Arthroscopic Bankart repair with Remplissage
. Putti-Platt procedure

Correct Answer & Explanation

. Arthroscopic Bankart repair


Explanation

Anterior glenoid bone loss greater than 20-25% is a strict contraindication for isolated soft-tissue stabilization (Bankart repair). The Latarjet procedure (coracoid transfer) is the gold standard for restoring glenohumeral stability in the setting of critical bone loss.

Question 1173

Topic: Shoulder & Hip Sports

A 42-year-old male presents with a locked posterior shoulder dislocation following a witnessed seizure. Imaging reveals a reverse Hill-Sachs lesion comprising 30% of the anterior humeral head articular surface. After successful open reduction, the shoulder remains unstable in internal rotation. What is the most appropriate treatment for the humeral head defect?

. Derotational osteotomy of the proximal humerus
. Arthroscopic posterior labral repair alone
. Transfer of the subscapularis tendon into the defect (Modified McLaughlin)
. Total shoulder arthroplasty
. Open reduction and internal fixation with a locked plate

Correct Answer & Explanation

. Derotational osteotomy of the proximal humerus


Explanation

A reverse Hill-Sachs lesion involving 20% to 40% of the articular surface is optimally managed with a modified McLaughlin procedure, which involves transferring the subscapularis tendon or lesser tuberosity into the defect. Defects greater than 40-50% typically require arthroplasty.

Question 1174

Topic: Shoulder & Hip Sports

A 26-year-old male presents with recurrent anterior shoulder instability. Diagnostic imaging reveals a Bankart lesion, 10% anterior glenoid bone loss, and a large Hill-Sachs lesion that engages the anterior glenoid rim on dynamic 3D CT modeling. Which of the following is the most appropriate surgical management?

. Isolated arthroscopic Bankart repair
. Isolated open capsular shift
. Arthroscopic Bankart repair with Remplissage
. Iliac crest bone grafting of the glenoid
. Proximal humerus derotational osteotomy

Correct Answer & Explanation

. Isolated arthroscopic Bankart repair


Explanation

An engaging Hill-Sachs lesion in the setting of subcritical glenoid bone loss (<20%) is best managed with a Bankart repair combined with a Remplissage procedure (infraspinatus tenodesis into the defect). This converts an intra-articular defect to an extra-articular one, preventing engagement.

Question 1175

Topic: Shoulder & Hip Sports

A 55-year-old man presents to the emergency department after falling on his outstretched hand. Radiographs confirm an anteroinferior shoulder dislocation. After successful closed reduction, he notes decreased sensation over the lateral aspect of his shoulder. If this neurologic deficit persists, weakness in which of the following muscles is most likely to be observed?

. Supraspinatus
. Subscapularis
. Teres minor
. Teres major
. Infraspinatus

Correct Answer & Explanation

. Supraspinatus


Explanation

The axillary nerve is the most commonly injured nerve during an anterior shoulder dislocation, leading to numbness over the lateral shoulder (regimental badge area). The axillary nerve innervates both the deltoid and the teres minor muscles.

Question 1176

Topic: Shoulder & Hip Sports

A 24-year-old male sustains a shoulder injury following a seizure. Examination reveals the arm is locked in internal rotation. Radiographs demonstrate a posterior shoulder dislocation with an anteromedial humeral head defect involving 30% of the articular surface. Which of the following is the most appropriate surgical management?

. Closed reduction and spica casting
. Arthroscopic Bankart repair
. Open reduction and lesser tuberosity transfer (McLaughlin procedure)
. Latissimus dorsi transfer
. Total shoulder arthroplasty

Correct Answer & Explanation

. Closed reduction and spica casting


Explanation

A reverse Hill-Sachs lesion involving 20% to 40% of the articular surface requires defect filling to prevent recurrent posterior instability. The modified McLaughlin procedure (transfer of the lesser tuberosity/subscapularis into the defect) is indicated for these medium-sized defects.

Question 1177

Topic: Shoulder & Hip Sports

A 29-year-old overhead throwing athlete develops gradual onset of posterior shoulder pain. Examination demonstrates a positive impingement sign and localized tenderness at the posterior joint line when the arm is abducted and externally rotated.

What is the most likely pathophysiologic mechanism for this condition?

. Subcoracoid impingement of the subscapularis
. Contact between the greater tuberosity and the posterosuperior glenoid
. Traction injury to the suprascapular nerve
. Degeneration of the acromioclavicular joint
. Anterosuperior escape of the humeral head

Correct Answer & Explanation

. Subcoracoid impingement of the subscapularis


Explanation

The scenario describes internal impingement, common in overhead throwers. It is caused by the abutment of the articular surface of the rotator cuff and greater tuberosity against the posterosuperior glenoid labrum during late cocking (abduction and external rotation).

Question 1178

Topic: Shoulder & Hip Sports

A 22-year-old collegiate rugby player presents with recurrent anterior shoulder dislocations. A 3D computed tomography (CT) scan demonstrates 25% anterior glenoid bone loss. Which of the following is the most appropriate surgical management?

. Arthroscopic Bankart repair
. Arthroscopic remplissage alone
. Open Latarjet procedure
. Open capsular shift
. Putti-Platt procedure

Correct Answer & Explanation

. Arthroscopic Bankart repair


Explanation

The Latarjet procedure (coracoid transfer) is the gold standard for anterior shoulder instability in the presence of critical glenoid bone loss (typically >20-25%), which would otherwise result in a high failure rate if treated with an isolated soft-tissue Bankart repair.

Question 1179

Topic: Shoulder & Hip Sports

A 25-year-old professional baseball pitcher presents with a "dead arm" and pain during the late cocking phase of throwing. MRI arthrography reveals a Type II Superior Labrum Anterior to Posterior (SLAP) tear. What is the most widely recommended initial management?

. Immediate arthroscopic Type II SLAP repair
. Open subpectoral biceps tenodesis
. Arthroscopic biceps tenotomy
. Physical therapy focusing on correcting glenohumeral internal rotation deficit (GIRD) and scapular dyskinesia
. Open anterior capsular shift

Correct Answer & Explanation

. Immediate arthroscopic Type II SLAP repair


Explanation

In elite overhead throwers, initial management for SLAP tears should emphasize physical therapy to correct GIRD and scapular dyskinesia. Surgical intervention (SLAP repair) in this population often leads to a failure to return to pre-injury levels of play and is reserved for failed conservative treatment.

Question 1180

Topic: Shoulder & Hip Sports

A 25-year-old professional baseball pitcher complains of vague deep shoulder pain. On physical exam, he has decreased internal rotation of 25 degrees compared to the contralateral side. A peel-back sign is positive. What is the primary pathologic mechanism contributing to his diagnosis?

. Anterior capsular laxity
. Posterior capsular contracture
. Subacromial spurring
. Pectoralis minor tightness
. Coracohumeral ligament thickening

Correct Answer & Explanation

. Anterior capsular laxity


Explanation

Glenohumeral internal rotation deficit (GIRD) in overhead athletes is caused by posterior capsular contracture. This leads to a posterosuperior shift of the humeral head during late cocking, resulting in internal impingement and SLAP tears.