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Question 1401

Topic: Shoulder & Hip Sports

Which of the following structures is NOT a border or content of the rotator interval?

. Coracohumeral ligament
. Superior glenohumeral ligament
. Long head of the biceps tendon
. Teres minor tendon
. Supraspinatus tendon

Correct Answer & Explanation

. Coracohumeral ligament


Explanation

The rotator interval is bounded by the supraspinatus (superiorly) and subscapularis (inferiorly). It contains the coracohumeral ligament, superior glenohumeral ligament, and the long head of the biceps tendon.

Question 1402

Topic: Shoulder & Hip Sports

Which of the following structures form the borders of the quadrilateral space in the shoulder?

. Teres minor, teres major, long head of triceps, humerus
. Teres minor, teres major, lateral head of triceps, humerus
. Infraspinatus, subscapularis, long head of triceps, humerus
. Teres minor, teres major, coracobrachialis, humerus
. Supraspinatus, teres major, long head of triceps, scapula

Correct Answer & Explanation

. Teres minor, teres major, long head of triceps, humerus


Explanation

The quadrilateral space is bordered by the teres minor (superior), teres major (inferior), long head of the triceps (medial), and surgical neck of the humerus (lateral). It contains the axillary nerve and posterior circumflex humeral artery.

Question 1403

Topic: Shoulder & Hip Sports

The suprascapular nerve passes through the suprascapular notch and then the spinoglenoid notch. At the spinoglenoid notch, it is accompanied by which blood vessel?

. Suprascapular artery
. Transverse cervical artery
. Posterior circumflex humeral artery
. Circumflex scapular artery
. Dorsal scapular artery

Correct Answer & Explanation

. Suprascapular artery


Explanation

The suprascapular nerve and artery travel together through the spinoglenoid notch to supply the infraspinatus. Notably, at the suprascapular notch, the artery travels over the transverse scapular ligament while the nerve travels under it.

Question 1404

Topic: Shoulder & Hip Sports

A 28-year-old overhead athlete presents with isolated weakness in external rotation of the shoulder. An MRI reveals a paralabral cyst in the spinoglenoid notch. Which muscle is predominantly denervated?

. Supraspinatus
. Infraspinatus
. Teres minor
. Subscapularis
. Deltoid

Correct Answer & Explanation

. Supraspinatus


Explanation

The suprascapular nerve innervates the supraspinatus before passing through the spinoglenoid notch to innervate the infraspinatus. Entrapment at the spinoglenoid notch results in isolated infraspinatus weakness.

Question 1405

Topic: Shoulder & Hip Sports

A 28-year-old volleyball player presents with insidious onset of vague posterior shoulder pain and profound weakness in external rotation, with preserved abduction. At what anatomical site is the injured nerve most likely compressed?

. Quadrilateral space
. Spinoglenoid notch
. Suprascapular notch
. Spiral groove
. Cubital tunnel

Correct Answer & Explanation

. Quadrilateral space


Explanation

Isolated weakness of the infraspinatus (external rotation) with preserved supraspinatus function (abduction) suggests suprascapular nerve entrapment at the spinoglenoid notch. Entrapment at the suprascapular notch would affect both muscles.

Question 1406

Topic: Shoulder & Hip Sports
Figure 30 demonstrates the osseous landmarks of the scapula. The coracoacromial ligament attaches to the acromion and the coracoid process. Which variation of the acromion morphology is most strongly associated with full-thickness rotator cuff tears?
. Type I (flat)
. Type II (curved)
. Type III (hooked)
. Type IV (convex)
. Os acromiale

Correct Answer & Explanation

. Type III (hooked)


Explanation

The Bigliani Type III (hooked) acromion reduces the subacromial space significantly. It is highly associated with subacromial impingement and full-thickness rotator cuff tears.

Question 1407

Topic: Shoulder & Hip Sports

A 22-year-old competitive rugby player presents with recurrent anterior shoulder dislocations. CT imaging demonstrates a 25% anterior glenoid bone loss and a deep, engaging Hill-Sachs lesion. What is the most appropriate surgical management?

. Arthroscopic Bankart repair
. Open Bankart repair with inferior capsular shift
. Latarjet procedure
. Remplissage alone
. Arthroscopic SLAP repair

Correct Answer & Explanation

. Arthroscopic Bankart repair


Explanation

Anterior glenoid bone loss greater than 20-25% in a collision athlete is a critical indication for a bony augmentation procedure. The Latarjet procedure restores glenoid width and provides a dynamic sling effect via the conjoint tendon.

Question 1408

Topic: Shoulder & Hip Sports

A 22-year-old collegiate linebacker presents with recurrent anterior shoulder instability. Preoperative CT imaging reveals a 28% anterior glenoid bone loss and an engaging Hill-Sachs lesion. Which of the following is the most appropriate surgical management?

. Arthroscopic Bankart repair with capsulorrhaphy
. Arthroscopic Bankart repair with Remplissage
. Latarjet procedure (coracoid transfer)
. Open capsular shift
. Subscapularis advancement (Putti-Platt procedure)

Correct Answer & Explanation

. Arthroscopic Bankart repair with capsulorrhaphy


Explanation

Anterior glenoid bone loss exceeding critical thresholds (typically 20-25%) in a high-demand collision athlete is an absolute indication for a bony augmentation procedure like the Latarjet. Arthroscopic soft-tissue repairs have unacceptably high failure rates in the presence of such severe glenoid bone loss.

Question 1409

Topic: Shoulder & Hip Sports

A 21-year-old collegiate rugby player presents with recurrent anterior shoulder instability. A 3D CT scan reveals 25% anterior glenoid bone loss. Which of the following is the most appropriate definitive management?

. Arthroscopic Bankart repair with suture anchors
. Arthroscopic remplissage
. Open Latarjet coracoid transfer
. Open Bankart repair with inferior capsular shift
. Conservative management with a dedicated physical therapy program

Correct Answer & Explanation

. Arthroscopic Bankart repair with suture anchors


Explanation

In a young contact athlete with recurrent instability and >20-25% anterior glenoid bone loss, a Latarjet procedure (coracoid transfer) is the gold standard. Soft tissue procedures alone (Bankart) have unacceptably high failure rates in this setting.

Question 1410

Topic: Shoulder & Hip Sports

A 20-year-old male sustains a traumatic anterior shoulder dislocation. After closed reduction, CT scan demonstrates a 25% anterior glenoid bone loss. What is the most appropriate definitive surgical management?

. Arthroscopic Bankart repair
. Arthroscopic remplissage
. Latarjet procedure
. Open capsular shift
. Arthroscopic SLAP repair

Correct Answer & Explanation

. Arthroscopic Bankart repair


Explanation

For critical anterior glenoid bone loss (>20-25%), isolated arthroscopic soft-tissue repair has unacceptably high recurrence rates. A bone block augmentation procedure, such as the Latarjet procedure (coracoid transfer), is the standard of care.

Question 1411

Topic: Shoulder & Hip Sports

A 24-year-old gymnast presents with a painful shoulder. Examination demonstrates generalized ligamentous laxity, positive sulcus sign, and apprehension with anterior and posterior translation. She has failed 6 months of physical therapy. What is the most appropriate surgical treatment for her multidirectional instability?

. Arthroscopic Bankart repair
. Latarjet procedure
. Arthroscopic capsular plication
. Biceps tenodesis
. Subacromial decompression

Correct Answer & Explanation

. Arthroscopic Bankart repair


Explanation

For multidirectional shoulder instability (MDI) that has failed extensive conservative management, global capsular reduction via open or arthroscopic capsular plication (capsular shift) is the surgical treatment of choice. Isolated labral repairs do not address the primary pathology of capsular redundancy.

Question 1412

Topic: Shoulder & Hip Sports

A 30-year-old baseball pitcher complains of posterior shoulder pain during the late cocking phase of throwing. Physical examination reveals a loss of 25 degrees of internal rotation compared to the contralateral side, while external rotation is increased. What is the most likely diagnosis?

. Subacromial impingement
. Glenohumeral internal rotation deficit (GIRD)
. Adhesive capsulitis
. Pectoralis major rupture
. Subscapularis tear

Correct Answer & Explanation

. Subacromial impingement


Explanation

Glenohumeral internal rotation deficit (GIRD) is common in overhead athletes and is defined as a loss of >20 degrees of internal rotation compared to the non-throwing shoulder. It is associated with posterior capsular contracture and internal impingement.

Question 1413

Topic: Shoulder & Hip Sports

A 20-year-old rugby player undergoes a Latarjet procedure for recurrent anterior shoulder instability with significant glenoid bone loss. Postoperatively, he presents with weakness in elbow flexion and decreased sensation over the lateral forearm. Which nerve was most likely injured during the procedure?

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

Correct Answer & Explanation

. Axillary nerve


Explanation

The musculocutaneous nerve is the most commonly injured nerve during the Latarjet procedure due to its proximity to the coracoid process. It innervates the biceps brachii and brachialis, and provides sensation to the lateral forearm via the lateral antebrachial cutaneous nerve.

Question 1414

Topic: Shoulder & Hip Sports

A 35-year-old man presents to the emergency department complaining of shoulder pain after a first-time generalized tonic-clonic seizure. On examination, his arm is locked in adduction and internal rotation. Radiographs reveal a posterior shoulder dislocation with an anteromedial humeral head defect involving 20% of the articular surface. What is this defect termed?

. Bankart lesion
. Hill-Sachs lesion
. Reverse Hill-Sachs lesion
. ALPSA lesion
. GLAD lesion

Correct Answer & Explanation

. Bankart lesion


Explanation

A reverse Hill-Sachs lesion (McLaughlin lesion) is an impaction fracture of the anteromedial humeral head commonly associated with posterior shoulder dislocations. A classic Hill-Sachs lesion is a posterolateral defect associated with anterior dislocations.

Question 1415

Topic: Shoulder & Hip Sports

A 35-year-old man presents with a locked shoulder after a generalized seizure. Radiographs demonstrate a posterior shoulder dislocation with an anterior humeral head defect involving 25% of the articular surface as shown in Figure 1.

What is the most appropriate surgical management?

. Closed reduction and sling immobilization
. Arthroscopic Bankart repair
. Open reduction and lesser tuberosity transfer
. Coracoid transfer (Latarjet procedure)
. Total shoulder arthroplasty

Correct Answer & Explanation

. Closed reduction and sling immobilization


Explanation

Posterior shoulder dislocations with an associated reverse Hill-Sachs lesion involving 20% to 40% of the articular surface are best treated with a lesser tuberosity transfer (McLaughlin procedure) into the defect. Defects >40% typically require arthroplasty.

Question 1416

Topic: Shoulder & Hip Sports

A 19-year-old female gymnast presents with bilateral shoulder pain and a sensation of the shoulders "slipping" out of joint. Examination reveals positive sulcus signs bilaterally and generalized ligamentous laxity (Beighton score 7/9). Initial management should consist of:

. Arthroscopic capsular plication
. Open inferior capsular shift
. Thermal capsulorrhaphy
. Physical therapy focusing on periscapular and rotator cuff strengthening
. Arthroscopic Bankart repair

Correct Answer & Explanation

. Arthroscopic capsular plication


Explanation

Multidirectional instability (MDI) often presents with generalized ligamentous laxity and bilateral symptoms. First-line treatment is strictly nonoperative, focusing on an extensive rehabilitation program to strengthen the dynamic stabilizers of the shoulder.

Question 1417

Topic: Shoulder & Hip Sports

A 22-year-old football player sustains a recurrent anterior shoulder dislocation.

Advanced imaging demonstrates an engaging Hill-Sachs lesion and anterior glenoid bone loss of 28%. What is the most appropriate surgical management to minimize the risk of recurrence?

. Arthroscopic Bankart repair with superior labral repair
. Arthroscopic Remplissage and standard Bankart repair
. Coracoid transfer (Latarjet procedure)
. Open inferior capsular shift
. Arthroscopic thermal capsulorrhaphy

Correct Answer & Explanation

. Arthroscopic Bankart repair with superior labral repair


Explanation

In the setting of significant anterior glenoid bone loss (subcritical typically >13.5%, critical >20-25%) and an engaging Hill-Sachs lesion, soft tissue procedures have unacceptably high failure rates. A bony augmentation procedure, such as the Latarjet procedure, is indicated to restore stability.

Question 1418

Topic: Shoulder & Hip Sports

A 48-year-old ski instructor dislocates his nondominant shoulder in a fall. Management consisting of application of a sling for 1 week results in improvement in his pain. Follow-up examination 6 weeks after the injury reveals that the patient continues to have difficulty with shoulder elevation. Management should now include

. use of the sling for an additional 3 weeks.
. physical therapy.
. a corticosteroid injection.
. an MRI scan of the rotator cuff.
. arthroscopic labral repair.

Correct Answer & Explanation

. use of the sling for an additional 3 weeks.


Explanation

Patients who are older than age 45 years and have initial dislocations are at greater risk for tearing the rotator cuff. Patients who are unable to lift the upper extremity or who have continued pain should undergo further evaluation for potential rotator cuff tears; early diagnosis is preferred. Physical therapy or continued use of a sling will be of little benefit. A corticosteroid injection might delay the diagnosis and compromise subsequent rotator cuff repair. Repairing the labrum generally is not necessary in a patient of this age who has an initial dislocation. Hawkins RJ, Bell RH, Hawkins RH, Koppert GJ: Anterior dislocation of the shoulder in the older patient. Clin Orthop 1986;206:192-195.

Question 1419

Topic: Shoulder & Hip Sports

A 21-year-old rugby player has recurrent anterior shoulder instability. CT scan

reveals 25% anterior glenoid bone loss. Which of the following is the most appropriate definitive management?

. Arthroscopic Bankart repair
. Arthroscopic Bankart repair with Remplissage
. Latarjet procedure
. Open capsular shift
. Putti-Platt procedure

Correct Answer & Explanation

. Arthroscopic Bankart repair


Explanation

In the setting of critical anterior glenoid bone loss (>20-25%) in a contact athlete, a coracoid transfer (Latarjet procedure) is the gold standard. Arthroscopic soft tissue stabilization has an unacceptably high failure rate in this scenario.

Question 1420

Topic: Shoulder & Hip Sports

A 55-year-old man presents with an inability to actively internally rotate his arm. Physical examination reveals a positive belly-press test and increased external rotation compared to the contralateral side. MRI confirms a full-thickness tear of the subscapularis. During repair, which anatomic landmark reliably helps locate the retracted tendon?

. Biceps tendon
. Conjoint tendon
. Coracoacromial ligament
. Lesser tuberosity
. Axillary nerve

Correct Answer & Explanation

. Biceps tendon


Explanation

The long head of the biceps tendon is a critical landmark; the subscapularis tendon inserts on the lesser tuberosity just medial to the bicipital groove. A subscapularis tear frequently leads to medial subluxation of the biceps tendon.