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Question 1781

Topic: Shoulder & Hip Sports

A 45-year-old recreational tennis player complains of persistent anterior shoulder pain that is exacerbated by overhead activities. An MRI arthrogram reveals an isolated type II superior labrum anterior and posterior (SLAP) tear. He has failed 6 months of comprehensive nonoperative management. In this age group, which of the following surgical interventions provides the most reliable patient-reported outcomes and the lowest revision rate?

. Arthroscopic SLAP repair with suture anchors
. Open Latarjet procedure
. Arthroscopic superior labrum debridement only
. Subpectoral biceps tenodesis
. Coracoacromial ligament release

Correct Answer & Explanation

. Subpectoral biceps tenodesis


Explanation

In patients older than 40 years, biceps tenodesis (either open subpectoral or arthroscopic) has been shown to yield more reliable pain relief, higher satisfaction, and significantly lower revision rates compared to primary arthroscopic SLAP repair. SLAP repair in this older demographic is associated with a higher risk of postoperative stiffness and persistent pain.

Question 1782

Topic: Shoulder & Hip Sports

A 60-year-old man with a massive, retracted, and irreparable posterosuperior rotator cuff tear is being evaluated for a latissimus dorsi tendon transfer. Which of the following conditions is considered an absolute contraindication to performing this procedure?

. An intact coracoacromial ligament
. Grade 4 fatty infiltration of the subscapularis
. Age greater than 55 years
. Grade 4 fatty infiltration of the infraspinatus
. Hamada Stage 1 radiographic changes

Correct Answer & Explanation

. Grade 4 fatty infiltration of the subscapularis


Explanation

Latissimus dorsi tendon transfer is indicated to restore active external rotation and forward elevation in patients with irreparable posterosuperior rotator cuff tears (supraspinatus and infraspinatus). The success of the transfer relies heavily on an intact and functioning anterior force couple to balance the transferred latissimus posteriorly and stabilize the humeral head in the glenoid. Therefore, a deficient subscapularis (e.g., irreparable tear or Grade 3/4 fatty infiltration) is a classic absolute contraindication to the procedure. Advanced glenohumeral arthritis (Hamada Stage 4 or 5) and pseudoparalysis with superior escape are also generally considered contraindications.

Question 1783

Topic: Shoulder & Hip Sports

A 28-year-old elite volleyball player presents with insidious onset of vague posterior shoulder pain and subjective weakness. Clinical examination reveals isolated atrophy of the infraspinatus muscle with preserved bulk of the supraspinatus. Overhead external rotation strength is decreased. An MRI is obtained. Where is the most likely site of nerve compression?

. Suprascapular notch
. Spinoglenoid notch
. Quadrilateral space
. Triangular interval
. Spiral groove

Correct Answer & Explanation

. Spinoglenoid notch


Explanation

The suprascapular nerve innervates the supraspinatus muscle before traversing the spinoglenoid notch to innervate the infraspinatus. Compression at the spinoglenoid notch, often caused by a paralabral cyst originating from a posterior labral tear, selectively denervates the infraspinatus, leading to isolated atrophy and external rotation weakness. If compression occurred proximally at the suprascapular notch, both the supraspinatus and infraspinatus would be affected.

Question 1784

Topic: Shoulder & Hip Sports

A 22-year-old competitive rugby player presents with recurrent anterior shoulder instability following 4 traumatic dislocations. A CT scan with 3D reconstruction demonstrates 28% anterior glenoid bone loss. Which of the following is the most appropriate surgical management to prevent recurrence?

. Arthroscopic Bankart repair with Remplissage
. Open Bankart repair and inferior capsular shift
. Latarjet procedure (coracoid transfer)
. Arthroscopic capsulolabral repair with superior labrum anterior-posterior (SLAP) repair
. Proximal humerus derotational osteotomy

Correct Answer & Explanation

. Latarjet procedure (coracoid transfer)


Explanation

In the setting of anterior shoulder instability, critical glenoid bone loss is generally considered to be greater than 20-25%. Soft tissue stabilization alone (e.g., arthroscopic or open Bankart repair) is contraindicated due to unacceptably high recurrence rates. A bony augmentation procedure, such as the Latarjet procedure (transfer of the coracoid process with the attached conjoint tendon to the anterior glenoid), is required to restore the articular arc and provide the dynamic 'sling' effect of the conjoint tendon.

Question 1785

Topic: Shoulder & Hip Sports

A 22-year-old collegiate rugby player presents with his third anterior shoulder dislocation this season. Advanced imaging shows a 25% anterior glenoid bone loss and an engaging Hill-Sachs lesion. Which of the following is the most appropriate definitive management to prevent recurrent instability and allow a return to contact sports?

. Arthroscopic Bankart repair with superior labral repair
. Arthroscopic Remplissage alone
. Open coracoid transfer (Latarjet procedure)
. Open inferior capsular shift
. Arthroscopic capsulolabral repair with thermal shrinkage

Correct Answer & Explanation

. Open coracoid transfer (Latarjet procedure)


Explanation

In a young, high-demand collision athlete with significant anterior glenoid bone loss (>20-25%), an arthroscopic Bankart repair is associated with an unacceptably high failure rate. A bony augmentation procedure, such as the Latarjet (coracoid transfer), is indicated to restore the glenoid arc and provide a dynamic 'sling' effect from the conjoint tendon. Remplissage can address an engaging Hill-Sachs lesion but does not treat the critical anterior glenoid bone loss.

Question 1786

Topic: Shoulder & Hip Sports

A 28-year-old male bodybuilder reports vague, deep posterior shoulder pain and weakness with external rotation. He denies any history of trauma. Physical examination reveals isolated atrophy of the infraspinatus with normal bulk of the supraspinatus. Forward elevation and internal rotation strength are normal. MRI of the shoulder is most likely to show which of the following?

. A paralabral cyst compressing the spinoglenoid notch
. A paralabral cyst compressing the suprascapular notch
. A high-grade partial tear of the upper subscapularis tendon
. Hypertrophy of the quadrilateral space borders causing axillary nerve entrapment
. An acute SLAP tear without extra-articular extension

Correct Answer & Explanation

. A paralabral cyst compressing the spinoglenoid notch


Explanation

Isolated infraspinatus atrophy with normal supraspinatus function is the classic presentation for suprascapular nerve compression at the spinoglenoid notch. In young, athletic patients, this is most commonly caused by a paralabral cyst forming as a result of a posterior labral tear. Compression at the suprascapular notch would present earlier in the nerve's course, affecting both the supraspinatus and infraspinatus muscles. Quadrilateral space syndrome involves the axillary nerve, leading to teres minor and deltoid atrophy.

Question 1787

Topic: Shoulder & Hip Sports

A 28-year-old elite volleyball player presents with an insidious onset of vague posterior shoulder pain and weakness with external rotation. Clinical examination reveals isolated atrophy of the infraspinatus with a normal bulk and strength of the supraspinatus.

The most likely site of nerve compression is the:

. Suprascapular notch
. Spinoglenoid notch
. Quadrilateral space
. Triangular interval
. Thoracic outlet

Correct Answer & Explanation

. Spinoglenoid notch


Explanation

The suprascapular nerve provides motor innervation to both the supraspinatus and infraspinatus muscles. Compression at the suprascapular notch affects both muscles. However, compression at the spinoglenoid notch occurs distal to the motor branch for the supraspinatus, resulting in isolated weakness and atrophy of the infraspinatus muscle. This is classically seen in overhead athletes or in association with a posterior paralabral cyst.

Question 1788

Topic: Shoulder & Hip Sports

A 22-year-old collegiate baseball pitcher presents with vague anterior shoulder pain during the late cocking and early acceleration phases of throwing. Examination shows a 25-degree loss of internal rotation and a 15-degree gain in external rotation in the symptomatic shoulder compared to the contralateral side. Which of the following pathological changes is most closely associated with the development of this specific glenohumeral internal rotation deficit (GIRD)?

. Contracture of the anteroinferior capsule
. Contracture of the posteroinferior capsule
. Attenuation of the coracohumeral ligament
. Shortening of the pectoralis minor
. Hypertrophy of the subscapularis tendon

Correct Answer & Explanation

. Contracture of the posteroinferior capsule


Explanation

Glenohumeral internal rotation deficit (GIRD) is classically associated with contracture and thickening of the posteroinferior capsule, commonly seen in overhead throwing athletes due to repetitive eccentric loads during the deceleration phase of throwing. This contracture shifts the glenohumeral center of rotation posterosuperiorly during the cocking phase, predisposing the athlete to SLAP tears and internal impingement. Treatment involves physical therapy focused on posterior capsule stretching (e.g., sleeper stretches).

Question 1789

Topic: Shoulder & Hip Sports

A 45-year-old manual laborer presents with chronic, severe right shoulder pain and an inability to actively elevate his arm above 40 degrees. He has a positive drop sign and a positive hornblower's sign. MRI demonstrates a massive, retracted supraspinatus and infraspinatus tear with Goutallier grade 4 fatty infiltration. The subscapularis tendon is completely intact. After failure of conservative management, what is the most appropriate surgical tendon transfer to restore active external rotation and function in this patient?

. Pectoralis major transfer
. Latissimus dorsi transfer
. Lower trapezius transfer
. Levator scapulae transfer
. Teres major transfer

Correct Answer & Explanation

. Latissimus dorsi transfer


Explanation

A Latissimus dorsi transfer (or lower trapezius transfer) is indicated for younger patients with a massive, irreparable posterosuperior rotator cuff tear (supraspinatus and infraspinatus) who have an intact or repairable subscapularis and preserved deltoid function. The positive drop and hornblower's signs indicate profound external rotation weakness and infraspinatus/teres minor deficiency. Pectoralis major transfer is indicated for massive, irreparable subscapularis tears.

Question 1790

Topic: Shoulder & Hip Sports

A 29-year-old elite volleyball player presents with an 8-month history of deep, aching posterior shoulder pain and a noted decrease in serving velocity. Physical examination reveals noticeable atrophy of the infraspinatus fossa, while the supraspinatus fossa appears completely normal. She demonstrates 5/5 strength in forward elevation but 3/5 strength in external rotation with the arm resting at her side. What is the most likely anatomic location of the neural compression?

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

Correct Answer & Explanation

. Spinoglenoid notch


Explanation

The clinical presentation is classic for suprascapular nerve entrapment at the spinoglenoid notch. Because the suprascapular nerve gives off its motor branches to the supraspinatus muscle proximal to the spinoglenoid notch, entrapment at this distal location results in isolated infraspinatus atrophy and weakness (manifesting as weakness in external rotation). This condition is commonly seen in overhead athletes and is frequently associated with a paralabral cyst arising from a posterior SLAP or labral tear. Entrapment at the more proximal suprascapular notch would typically affect both the supraspinatus and infraspinatus.

Question 1791

Topic: Shoulder & Hip Sports

A 22-year-old competitive rugby player presents with recurrent anterior shoulder instability. A 3D CT scan reveals 26% anterior glenoid bone loss. Which of the following is the most appropriate definitive surgical management?

. Arthroscopic Bankart repair with capsulorrhaphy
. Remplissage procedure alone
. Open Latarjet procedure
. Putti-Platt procedure
. Arthroscopic labral repair with a rotator interval closure

Correct Answer & Explanation

. Open Latarjet procedure


Explanation

Anterior glenoid bone loss greater than 20-25% is a critical threshold where arthroscopic Bankart soft-tissue repair has an unacceptably high failure rate. An open Latarjet (coracoid transfer) procedure is the treatment of choice.

Question 1792

Topic: Shoulder & Hip Sports

A 45-year-old manual laborer undergoes arthroscopic evaluation for a type II SLAP tear. He also has a full-thickness supraspinatus tear. What is the most appropriate management of the biceps labral complex in this patient demographic?

. Arthroscopic SLAP repair
. Biceps tenodesis
. Biceps tenotomy with no fixation
. Debridement of the superior labrum only
. Nonoperative management of both tears

Correct Answer & Explanation

. Biceps tenodesis


Explanation

In patients older than 40 years, especially those with concomitant rotator cuff tears, biceps tenodesis yields superior functional outcomes and lower complication rates compared to SLAP repair. SLAP repair in older individuals is highly associated with postoperative stiffness.

Question 1793

Topic: Shoulder & Hip Sports

A 20-year-old rugby player has recurrent anterior shoulder instability. CT scan reveals 25% anterior glenoid bone loss. A Latarjet procedure is planned. Which nerve is at greatest risk during the coracoid transfer?

. Axillary nerve
. Suprascapular nerve
. Musculocutaneous nerve
. Median nerve
. Radial nerve

Correct Answer & Explanation

. Musculocutaneous nerve


Explanation

The musculocutaneous nerve enters the coracobrachialis approximately 3-8 cm distal to the coracoid process tip. It is at significant risk of traction or direct injury during coracoid osteotomy and transfer during the Latarjet procedure.

Question 1794

Topic: Shoulder & Hip Sports

A 55-year-old male presents with severe anterior shoulder pain and increased passive external rotation compared to the contralateral side. He exhibits a positive lift-off test and belly-press test. If this patient undergoes arthroscopy, what is the most likely associated pathology found in conjunction with his primary tendon injury?

. Posterior labral tear (reverse Bankart)
. Medial subluxation or dislocation of the long head of the biceps tendon
. Superior labrum anterior to posterior (SLAP) tear
. Posteroinferior capsular contracture
. Acromioclavicular joint osteoarthritis

Correct Answer & Explanation

. Medial subluxation or dislocation of the long head of the biceps tendon


Explanation

The clinical examination indicates an isolated subscapularis tear. Because the subscapularis and the coracohumeral ligament stabilize the long head of the biceps, a complete subscapularis tear frequently leads to medial subluxation or dislocation of the biceps tendon.

Question 1795

Topic: Shoulder & Hip Sports

A 22-year-old collegiate baseball pitcher presents with posterior shoulder pain during the late cocking phase of throwing. Examination shows a glenohumeral internal rotation deficit (GIRD) of 25 degrees compared to the contralateral shoulder. What is the primary underlying pathophysiology driving this specific impingement pattern?

. Contracture of the posteroinferior capsule
. Subcoracoid impingement of the subscapularis
. Anteroinferior capsular laxity from repetitive microtrauma
. Primary acromial morphological abnormality
. Hypertrophy of the long head of the biceps

Correct Answer & Explanation

. Contracture of the posteroinferior capsule


Explanation

Internal impingement in overhead throwers is driven by posteroinferior capsular contracture (leading to GIRD). This contracture alters glenohumeral kinematics, shifting the humeral head posterosuperiorly during maximum external rotation and pinching the rotator cuff against the posterosuperior glenoid.

Question 1796

Topic: Shoulder & Hip Sports

A 34-year-old man presents to the emergency department after a first-time generalized tonic-clonic seizure. His shoulder is locked in internal rotation and he cannot actively or passively externally rotate. An axillary radiograph confirms a posterior glenohumeral dislocation with an anteromedial humeral head impaction fracture involving 30% of the articular surface. What is the most appropriate surgical treatment?

. Closed reduction and immobilization in internal rotation
. Arthroscopic Bankart repair
. Transfer of the lesser tuberosity into the defect (McLaughlin procedure)
. Total shoulder arthroplasty
. Latarjet procedure

Correct Answer & Explanation

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


Explanation

The patient has a posterior dislocation with a significant reverse Hill-Sachs lesion (between 20-40% of the articular surface). The modified McLaughlin procedure (transfer of the lesser tuberosity/subscapularis into the defect) stabilizes the joint and prevents engagement of the defect on the posterior glenoid rim.

Question 1797

Topic: Shoulder & Hip Sports

A 26-year-old competitive volleyball player undergoes arthroscopic repair of a posterior labral tear. The surgeon places suture anchors extensively along the posteroinferior and posterosuperior glenoid rim. Postoperatively, the patient experiences isolated, profound weakness in external rotation despite a pain-free joint. What is the most likely iatrogenic cause of this complication?

. Axillary nerve injury at the inferior capsule
. Musculocutaneous nerve traction
. Over-tightening of the anterior band of the inferior glenohumeral ligament
. Suprascapular nerve entrapment at the spinoglenoid notch
. Spinal accessory nerve injury

Correct Answer & Explanation

. Suprascapular nerve entrapment at the spinoglenoid notch


Explanation

The suprascapular nerve passes through the spinoglenoid notch approximately 1 to 2 cm medial to the posterior glenoid rim. Placement of anchors or sutures too deeply or too far medially along the posterior/posterosuperior glenoid can easily entrap the nerve, causing denervation of the infraspinatus.

Question 1798

Topic: Shoulder & Hip Sports

A 28-year-old professional volleyball player presents with vague posterior shoulder pain and weakness with external rotation. Examination reveals isolated atrophy of the infraspinatus with normal supraspinatus bulk and strength. An MRI reveals a paralabral cyst. Where is the cyst most likely located to produce these exact findings?

. Suprascapular notch
. Spinoglenoid notch
. Quadrilateral space
. Triangular interval
. Coracoid base

Correct Answer & Explanation

. Spinoglenoid notch


Explanation

A cyst at the spinoglenoid notch compresses the suprascapular nerve after it has already given off its motor branches to the supraspinatus muscle. This results in isolated infraspinatus weakness and atrophy, which is a classic finding in overhead athletes with posterior labral tears.

Question 1799

Topic: Shoulder & Hip Sports

A 22-year-old rugby player undergoes diagnostic arthroscopy for recurrent anterior shoulder instability. The surgeon notes a Bankart lesion and an "engaging" Hill-Sachs lesion that drops over the anterior glenoid rim in abduction and external rotation. Assuming no significant glenoid bone loss, what adjunctive soft-tissue procedure should be performed alongside the Bankart repair?

. Arthroscopic remplissage
. Superior capsular reconstruction
. Arthroscopic SLAP repair
. Subscapularis advancement
. Rotator interval closure alone

Correct Answer & Explanation

. Arthroscopic remplissage


Explanation

An "engaging" Hill-Sachs lesion significantly increases the risk of recurrent anterior dislocation if only a Bankart repair is performed. Arthroscopic remplissage (insetting the infraspinatus tendon into the humeral defect) combined with a Bankart repair effectively converts the intra-articular defect into an extra-articular one, preventing engagement.

Question 1800

Topic: Shoulder & Hip Sports

During a Latarjet procedure for recurrent anterior shoulder instability, the coracoid process is osteotomized and transferred to the anterior glenoid. Which nerve is at the greatest risk of injury during the mobilization and transfer of the conjoined tendon?

. Axillary nerve
. Suprascapular nerve
. Musculocutaneous nerve
. Radial nerve
. Median nerve

Correct Answer & Explanation

. Musculocutaneous nerve


Explanation

The musculocutaneous nerve penetrates the coracobrachialis muscle typically 3 to 8 cm distal to the coracoid process. It is uniquely tethered to the conjoined tendon, making it highly susceptible to stretch or transection during the Latarjet procedure.