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Question 1021

Topic: Shoulder & Hip Sports

A 20-year-old collegiate quarterback is undergoing evaluation for recurrent anterior shoulder instability. Imaging demonstrates 15% anterior glenoid bone loss and a large Hill-Sachs lesion. Applying the 'glenoid track' concept, the Hill-Sachs lesion is determined to be 'off-track'. What is the most appropriate surgical management?

. Arthroscopic Bankart repair alone
. Arthroscopic Bankart repair combined with Remplissage
. Open Bankart repair without bony augmentation
. Coracoid transfer (Latarjet procedure)
. Humeral head structural allograft

Correct Answer & Explanation

. Arthroscopic Bankart repair combined with Remplissage


Explanation

For subcritical glenoid bone loss (<20%) paired with an 'off-track' (engaging) Hill-Sachs lesion, an arthroscopic Bankart repair combined with an infraspinatus tenodesis (Remplissage) is highly effective. This prevents the humeral defect from engaging the anterior glenoid rim.

Question 1022

Topic: Shoulder & Hip Sports

A 35-year-old male presents to the emergency department with a locked, painful shoulder following a severe generalized seizure. He holds his arm in internal rotation and adduction, and external rotation is physically blocked. Radiographs reveal a dislocation. What associated bony defect is most likely present?

. Anteroinferior labral avulsion with glenoid bone loss (Bony Bankart)
. Posterolateral humeral head impaction fracture (Hill-Sachs lesion)
. Anteromedial humeral head impaction fracture (Reverse Hill-Sachs lesion)
. Avulsion of the greater tuberosity
. Coracoid process fracture

Correct Answer & Explanation

. Anteromedial humeral head impaction fracture (Reverse Hill-Sachs lesion)


Explanation

The clinical presentation is classic for a posterior shoulder dislocation, commonly caused by the severe muscle contractions of a seizure or electrocution. The posterior glenoid rim impacts the anteromedial aspect of the humeral head, creating a reverse Hill-Sachs lesion.

Question 1023

Topic: Shoulder & Hip Sports

A 21-year-old collegiate baseball pitcher presents with vague, deep shoulder pain and a subjective decrease in pitching velocity. MRI arthrogram reveals a Type II SLAP tear. What biomechanical mechanism is primarily responsible for this specific injury in throwing athletes?

. Eccentric contraction of the biceps during the deceleration phase
. Direct axial load to an abducted and internally rotated arm
. The 'peel-back' mechanism during the late cocking and early acceleration phases
. Internal impingement of the subscapularis during follow-through
. Traction injury to the coracoacromial ligament

Correct Answer & Explanation

. The 'peel-back' mechanism during the late cocking and early acceleration phases


Explanation

In overhead throwers, Type II SLAP tears are predominantly caused by the 'peel-back' mechanism. During the late cocking phase, maximal external rotation and abduction create a torsional force at the biceps anchor, peeling the superior labrum off the posterior glenoid.

Question 1024

Topic: Shoulder & Hip Sports

A surgeon is performing an open Latarjet procedure for a patient with recurrent anterior shoulder instability and significant glenoid bone loss. During the mobilization and transfer of the coracoid process, which nerve is at the highest risk of iatrogenic injury due to traction on the conjoint tendon?

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

Correct Answer & Explanation

. Musculocutaneous nerve


Explanation

The musculocutaneous nerve enters the conjoint tendon (coracobrachialis and short head of the biceps) typically 3 to 8 cm distal to the coracoid tip. Vigorous medial retraction of the conjoint tendon during a Latarjet procedure places this nerve at significant risk for neuropraxia.

Question 1025

Topic: Shoulder & Hip Sports

A 20-year-old collegiate rugby player with recurrent anterior shoulder instability presents for evaluation. CT scan demonstrates 25% anterior glenoid bone loss. Which of the following is the most appropriate surgical management?

. Arthroscopic Bankart repair with capsular plication
. Arthroscopic Remplissage procedure
. Open Latarjet procedure
. Arthroscopic thermal capsulorrhaphy
. Open inferior capsular shift

Correct Answer & Explanation

. Open Latarjet procedure


Explanation

In the setting of recurrent anterior shoulder instability with critical glenoid bone loss (typically defined as >20-25%), a bone-block augmentation such as the Latarjet procedure is indicated to restore glenohumeral stability.

Question 1026

Topic: Shoulder & Hip Sports

A 38-year-old recreational weightlifter complains of deep anterior shoulder pain. MRI confirms an isolated Type II SLAP tear. After failing 6 months of physical therapy, surgical management is planned. Which of the following is the most appropriate surgical treatment?

. Arthroscopic SLAP repair with suture anchors
. Arthroscopic debridement of the superior labrum
. Biceps tenodesis
. Coracoid transfer
. Open Bankart repair

Correct Answer & Explanation

. Biceps tenodesis


Explanation

In patients older than 35 years or those who are not overhead throwers, biceps tenodesis provides more reliable pain relief and higher satisfaction rates compared to SLAP repair for Type II SLAP lesions.

Question 1027

Topic: Shoulder & Hip Sports

A patient with recurrent anterior shoulder instability is found to have an "off-track" Hill-Sachs lesion and 10% anterior glenoid bone loss on advanced imaging. Which of the following procedures is most appropriate to prevent recurrent instability?

. Arthroscopic Bankart repair alone
. Arthroscopic Bankart repair with Remplissage
. Open Latarjet procedure
. Humeral head osteochondral allograft
. Latissimus dorsi tendon transfer

Correct Answer & Explanation

. Arthroscopic Bankart repair with Remplissage


Explanation

An "off-track" Hill-Sachs lesion with subcritical (<20%) glenoid bone loss is best treated with an arthroscopic Bankart repair combined with a Remplissage procedure (infraspinatus tenodesis into the defect) to prevent the lesion from engaging the anterior glenoid.

Question 1028

Topic: Shoulder & Hip Sports

A 45-year-old male presents with severe shoulder pain and inability to externally rotate his arm after experiencing a generalized tonic-clonic seizure. An axillary radiograph reveals a posterior glenohumeral dislocation with an impaction fracture on the anteromedial aspect of the humeral head involving 30% of the articular surface. Which of the following is the most appropriate surgical treatment?

. Closed reduction and spica casting
. Arthroscopic Bankart repair
. McLaughlin procedure (transfer of the lesser tuberosity into the defect)
. Latarjet procedure
. Total shoulder arthroplasty

Correct Answer & Explanation

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


Explanation

Posterior shoulder dislocations are frequently associated with a reverse Hill-Sachs lesion (anteromedial impaction fracture). For defects between 20% and 40%, a McLaughlin procedure (transfer of the subscapularis or lesser tuberosity into the defect) is indicated.

Question 1029

Topic: Shoulder & Hip Sports

A 22-year-old rugby player undergoes a Latarjet procedure for recurrent anterior shoulder instability with 25% glenoid bone loss. Postoperatively, he demonstrates weakness in elbow flexion and decreased sensation over the lateral forearm. Which nerve was most likely injured during the procedure?

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

Correct Answer & Explanation

. Musculocutaneous nerve


Explanation

The musculocutaneous nerve is at highest risk during the Latarjet procedure as it enters the coracobrachialis muscle 3 to 8 cm distal to the coracoid tip. Retraction of the conjoint tendon must be carefully managed to avoid neuropraxia to this nerve.

Question 1030

Topic: Shoulder & Hip Sports

Which of the following is the most significant risk factor for recurrent shoulder dislocation following a primary traumatic anterior shoulder dislocation?

. Male gender
. Mechanism of injury
. Presence of a Hill-Sachs lesion
. Age of the patient at the time of initial injury
. Dominant vs. non-dominant extremity

Correct Answer & Explanation

. Age of the patient at the time of initial injury


Explanation

The patient's age at the time of the initial dislocation is the most significant risk factor for recurrence. Patients under the age of 20 have recurrence rates approaching 80 to 90% when treated with conservative management.

Question 1031

Topic: Shoulder & Hip Sports

A 22-year-old rugby player has recurrent anterior shoulder instability. CT reveals 25 percent anterior glenoid bone loss. Which of the following procedures is most appropriate to restore stability?

. Arthroscopic Bankart repair
. Arthroscopic capsular plication
. Open Latarjet procedure
. Arthroscopic remplissage alone
. Open inferior capsular shift

Correct Answer & Explanation

. Open Latarjet procedure


Explanation

In cases of significant anterior glenoid bone loss (greater than 20 percent), isolated soft-tissue procedures like a Bankart repair have an unacceptably high failure rate. The Latarjet procedure restores the bony arc and provides a dynamic sling effect with the conjoint tendon.

Question 1032

Topic: Shoulder & Hip Sports

A 32-year-old recreational skier presents with anterior shoulder instability. Imaging shows an engaging Hill-Sachs lesion and 10 percent anterior glenoid bone loss. Which of the following is the most appropriate surgical intervention?

. Arthroscopic Bankart repair with remplissage
. Isolated arthroscopic Bankart repair
. Open Latarjet procedure
. Arthroscopic subscapularis repair
. Open capsular shift

Correct Answer & Explanation

. Arthroscopic Bankart repair with remplissage


Explanation

For patients with subcritical glenoid bone loss (less than 20 percent) but an engaging or off-track Hill-Sachs lesion, an arthroscopic Bankart repair combined with a remplissage effectively prevents engagement and restores stability. A remplissage involves tenodesing the infraspinatus into the humeral defect.

Question 1033

Topic: Shoulder & Hip Sports

When performing an arthroscopic Bankart repair, the anteroinferior labrum is mobilized and repaired. The suture anchors should ideally be placed at which location to maximize biomechanical stability?

. On the glenoid rim, recreating the labral bumper
. 5 mm medial to the glenoid rim on the anterior neck
. At the 12 o'clock position only
. On the posterior capsular margin
. In the center of the glenoid articular surface

Correct Answer & Explanation

. On the glenoid rim, recreating the labral bumper


Explanation

Suture anchors for a Bankart repair must be placed directly on the glenoid rim or slightly onto the articular face to recreate the labral bumper. Placing them medially on the anterior neck (ALPSA position) fails to restore the native capsulolabral tension.

Question 1034

Topic: Shoulder & Hip Sports

A 20-year-old gymnast presents with multidirectional shoulder instability. She has failed 6 months of supervised physical therapy. An examination under anesthesia demonstrates 3+ inferior translation and a positive sulcus sign. What is the preferred surgical treatment?

. Open Latarjet procedure
. Arthroscopic capsular plication and inferior capsular shift
. Arthroscopic thermal capsulorrhaphy
. Arthroscopic SLAP repair
. Arthroscopic posterior labral repair

Correct Answer & Explanation

. Arthroscopic capsular plication and inferior capsular shift


Explanation

When nonoperative management fails in multidirectional instability, an arthroscopic or open inferior capsular shift/plication is the treatment of choice to reduce capsular volume. Thermal capsulorrhaphy is obsolete due to high failure rates and the risk of chondrolysis.

Question 1035

Topic: Shoulder & Hip Sports

A 25-year-old professional rugby player presents with recurrent anterior shoulder dislocations. CT imaging reveals 28% glenoid bone loss and an engaging Hill-Sachs lesion. Which of the following is the most appropriate surgical management?

. Arthroscopic Bankart repair alone
. Arthroscopic Bankart repair with Remplissage
. Open Latarjet procedure
. Open inferior capsular shift
. Humeral head hemiarthroplasty

Correct Answer & Explanation

. Open Latarjet procedure


Explanation

Glenoid bone loss greater than 20-25% in the setting of recurrent anterior instability is considered critical bone loss. Soft tissue stabilization alone has unacceptably high failure rates, making a bony augmentation procedure like the Latarjet the treatment of choice.

Question 1036

Topic: Shoulder & Hip Sports

A 45-year-old male presents with a locked posterior shoulder dislocation following a seizure. CT scan reveals a reverse Hill-Sachs lesion involving 35% of the humeral head articular surface. What is the most appropriate surgical intervention?

. Closed reduction and sling immobilization
. Arthroscopic posterior Bankart repair
. Open reduction and transfer of the lesser tuberosity into the defect
. Humeral head resurfacing
. Total shoulder arthroplasty

Correct Answer & Explanation

. Open reduction and transfer of the lesser tuberosity into the defect


Explanation

A reverse Hill-Sachs defect involving 20-40% of the articular surface is generally treated with a modified McLaughlin procedure (transfer of the lesser tuberosity and subscapularis into the defect). Defects >40% typically require arthroplasty.

Question 1037

Topic: Shoulder & Hip Sports

Following an open Latarjet procedure for recurrent anterior shoulder instability, a patient complains of new-onset numbness along the lateral aspect of the forearm and weakness in elbow flexion. Which nerve was most likely injured during the coracoid transfer?

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

Correct Answer & Explanation

. Musculocutaneous nerve


Explanation

The musculocutaneous nerve typically penetrates the coracobrachialis 3 to 8 cm distal to the coracoid process. It is at significant risk of traction or iatrogenic injury during coracoid osteotomy and retraction in the Latarjet procedure.

Question 1038

Topic: Shoulder & Hip Sports

A 20-year-old male undergoes an MR arthrogram for recurrent anterior shoulder instability. The radiologist notes an intact anterior periosteal sleeve with the anterior labrum medially displaced and healed to the glenoid neck. This pathoanatomy is best described as a:

. Classic Bankart lesion
. ALPSA lesion
. GLAD lesion
. Perthes lesion
. HAGL lesion

Correct Answer & Explanation

. ALPSA lesion


Explanation

An Anterior Labroligamentous Periosteal Sleeve Avulsion (ALPSA) lesion occurs when the anterior labrum strips off the glenoid and heals medially along the neck with an intact periosteum. It requires adequate lateral mobilization during arthroscopic repair.

Question 1039

Topic: Shoulder & Hip Sports

An 18-year-old athlete with recurrent anterior shoulder instability has a normal-appearing anterior labrum on MRI. However, a "J-sign" is noted on the MR arthrogram, showing fluid extravasation into the axillary pouch. Which of the following lesions is most likely present?

. HAGL lesion
. ALPSA lesion
. SLAP lesion
. Engaging Hill-Sachs lesion
. Rotator interval tear

Correct Answer & Explanation

. HAGL lesion


Explanation

A Humeral Avulsion of the Glenohumeral Ligament (HAGL) causes anterior instability in the absence of a Bankart lesion. It is classically identified on MR arthrography by a "J-sign" where contrast leaks into the axillary pouch through the lateral capsular defect.

Question 1040

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.