This practice set contains high-yield board review questions covering key concepts in Shoulder & Hip Sports. Each clinical scenario is designed to test your diagnostic and management skills relevant to this subspecialty.
Question 121
Topic: Shoulder & Hip Sports
A 24-year-old overhead athlete undergoes an arthroscopic Bankart repair for recurrent anterior shoulder instability. Which of the following structural lesions must be addressed to minimize the risk of recurrent instability postoperatively?
Correct Answer & Explanation
. Engaging Hill-Sachs lesion
Explanation
An engaging Hill-Sachs lesion can lever the humeral head out of the glenoid when the shoulder is in abduction and external rotation. If not addressed (e.g., via a remplissage procedure or bone block), it significantly increases the risk of recurrent instability.
Question 122
Topic: Shoulder & Hip Sports
Which of the following muscles is first affected in facioscapulohumeral dystrophy:
Correct Answer & Explanation
. Orbicularis oris
Explanation
In facioscapulohumeral dystrophy, the facial muscles are affected first, commonly presenting with an inability to whistle. The serratus muscles and scapular stabilizers are affected next. The deltoid, supraspinatus, and infraspinatus are typically not affected in this disease.
Question 123
Topic: Shoulder & Hip Sports
A 20-year-old collegiate wrestler undergoes an arthroscopic Bankart repair. During the procedure, an engaging Hill-Sachs lesion is noted that drops into the glenoid rim in abduction and external rotation. Which of the following procedures should be added to prevent recurrence?
Correct Answer & Explanation
. Remplissage procedure
Explanation
An engaging Hill-Sachs lesion can lever the humeral head out of the glenoid, leading to failure of an isolated Bankart repair. The arthroscopic remplissage procedure tenodeses the infraspinatus tendon into the defect, converting it to an extra-articular non-engaging lesion.
Question 124
Topic: Shoulder & Hip Sports
A 24-year-old male sustains recurrent anterior shoulder dislocations. Imaging demonstrates an engaging Hill-Sachs lesion and 25% bone loss of the anterior inferior glenoid. What is the most appropriate surgical intervention?
Correct Answer & Explanation
. Latarjet procedure
Explanation
In patients with recurrent anterior shoulder instability and significant anterior glenoid bone loss (>20-25%), isolated soft tissue repairs have unacceptably high failure rates. A bony augmentation procedure, such as the Latarjet (coracoid transfer), is required.
Question 125
Topic: Shoulder & Hip Sports
During an arthroscopic Bankart repair for recurrent anterior shoulder instability, a large Hill-Sachs lesion is noted. This lesion is anatomically described as an impaction fracture of the:
Correct Answer & Explanation
. Posterolateral humeral head
Explanation
A Hill-Sachs lesion is a cortical impaction fracture of the posterolateral humeral head created when it strikes the firm anterior glenoid rim during an anterior shoulder dislocation.
Question 126
Topic: Shoulder & Hip Sports
A 21-year-old collegiate linebacker has a history of recurrent anterior shoulder dislocations. A 3D CT scan reveals 28% anterior glenoid bone loss and an engaging Hill-Sachs lesion. What is the most appropriate definitive surgical intervention?
Correct Answer & Explanation
. Coracoid transfer (Latarjet procedure)
Explanation
In a high-demand contact athlete with critical anterior glenoid bone loss (typically greater than 20-25%), isolated soft-tissue stabilization has an unacceptably high failure rate. A bony augmentation procedure such as the Latarjet coracoid transfer is the standard of care.
Question 127
Topic: Shoulder & Hip Sports
A 20-year-old swimmer presents with recurrent anterior shoulder instability. An MRI arthrogram demonstrates an anterior labroligamentous avulsion where the anterior scapular periosteum remains intact but is stripped medially. Which lesion does this describe?
Correct Answer & Explanation
. ALPSA lesion
Explanation
An ALPSA (Anterior Labroligamentous Periosteal Sleeve Avulsion) lesion occurs when the labrum is avulsed but the anterior scapular periosteum remains intact, allowing the labrum to heal in a displaced, medialized position.
Question 128
Topic: Shoulder & Hip Sports
A 60-year-old patient undergoes an arthroscopic rotator cuff repair for a massive crescent-shaped tear. Biomechanically, what is the primary advantage of utilizing a double-row repair construct compared to a single-row repair?
Correct Answer & Explanation
. Increased pressurized footprint contact area
Explanation
Double-row rotator cuff repairs biomechanically provide a significantly larger and more pressurized contact area between the tendon and the tuberosity footprint. This promotes superior biologic healing rates compared to single-row constructs.
Question 129
Topic: Shoulder & Hip Sports
A 28-year-old male with recurrent anterior shoulder instability is found to have a Hill-Sachs lesion on MRI. Which of the following best describes the anatomic nature of this lesion?
Correct Answer & Explanation
. A compression fracture of the posterolateral aspect of the humeral head
Explanation
A Hill-Sachs lesion is an impaction fracture of the posterolateral humeral head. It is created when the humeral head strikes the sharp anterior glenoid rim during an anterior glenohumeral dislocation.
Question 130
Topic: Shoulder & Hip Sports
A 26-year-old professional volleyball player presents with insidious onset of posterior shoulder pain and isolated, profound weakness in external rotation. MRI reveals a paralabral cyst. In which anatomical location is the cyst most likely compressing the suprascapular nerve?
Correct Answer & Explanation
. Spinoglenoid notch
Explanation
Compression of the suprascapular nerve at the spinoglenoid notch affects only the branch to the infraspinatus, leading to isolated external rotation weakness. Compression at the suprascapular notch would also involve the supraspinatus, causing weakness in forward elevation.
Question 131
Topic: Shoulder & Hip Sports
A 15-year-old boy presented with inability to elevate his right shoulder and flex his elbow. He sustained a fall from an all-terrain vehicle 8 weeks ago. He landed on the right shoulder and twisted his neck. Radiographs of the skull, chest, cervical and thoracic spine, and shoulder were normal. There was no loss of consciousness, chest pain, or breathing difficulties. The patient was observed in the hospital until stable and referred for follow-up in the hand clinic at 4 weeks. An electromyelogram (EMG) was scheduled. Clinical examination revealed weakness of deltoid, supraspinatus, infraspinatus, teres minor, biceps, brachialis, brachioradialis, and extensor carpi radialis longus. The remainder of his forearm musculature was preserved and he could grasp, release, and pinch. Sensations were decreased along the distribution of the axillary nerve. There was 3 cm wasting of his arm and 2 cm of the forearm. Tinel's sign is positive around the clavicle. Horner's signs are absent and his arm lies against the body. The EMG report showed fibrillation potentials in the weak muscles. The patient can now flex his elbow. When asked to demonstrate, he flexes his wrist and pronates his forearm to swing his elbow into flexion. The least helpful test in further management of this patient is:
Correct Answer & Explanation
. Careful neurological examination
Explanation
Computed tomography scan of the cervical spine will not show the pseudomeningoceles nor provide any information on brachial plexus. Computed tomography may be needed in case of a suspected neck injury but does not form part of a brachial plexus work up.
Question 132
Topic: Shoulder & Hip Sports
A 15-year-old boy presented with inability to elevate his right shoulder and flex his elbow. He sustained a fall from an all-terrain vehicle 8 weeks ago. He landed on the right shoulder and twisted his neck. Radiographs of the skull, chest, cervical and thoracic spine, and shoulder were normal. There was no loss of consciousness, chest pain, or breathing difficulties. The patient was observed in the hospital until stable and referred for follow-up in the hand clinic at 4 weeks. An electromyelogram (EMG) was scheduled. Clinical examination revealed weakness of deltoid, supraspinatus, infraspinatus, teres minor, biceps, brachialis, brachioradialis, and extensor carpi radialis longus. The remainder of his forearm musculature was preserved and he could grasp, release, and pinch. Sensations were decreased along the distribution of the axillary nerve. There was 3 cm wasting of his arm and 2 cm of the forearm. Tinel's sign is positive around the clavicle. Horner's signs are absent and his arm lies against the body. The EMG report showed fibrillation potentials in the weak muscles. The patient can now flex his elbow. When asked to demonstrate, he flexes his wrist and pronates his forearm to swing his elbow into flexion. The most important indication for early exploration in this patient is:
Correct Answer & Explanation
. Absence of biceps function with return of extensor carpi radialis longus (ECRL) power at 4 months
Explanation
An important indication for early exploration is the recovery of a distally supplied muscle, ECRL C6, in the absence of a proximally supplied muscle, biceps C5. Trick movements are adaptive movements employed by the patient by recruiting other muscles, for example, the use of flexor-pronator as elbow flexors in this patient. Bony deformity is a late sequelae and biceps recovery at 3 months is important in obstetric brachial palsy.
Question 133
Topic: Shoulder & Hip Sports
A 4-month-old infant with obstetric brachial plexus palsy presents with an internal rotation contracture of the shoulder and complete absence of active biceps function. Wrist extension is also absent. What is the most appropriate next step in management?
Correct Answer & Explanation
. Immediate nerve exploration and reconstruction
Explanation
The absolute absence of biceps recovery by 3 to 4 months of age in obstetric brachial plexus palsy is a widely accepted surgical indication for nerve exploration. Delaying microsurgical reconstruction beyond this period leads to significantly poorer functional motor recovery.
Question 134
Topic: Shoulder & Hip Sports
A 40-year-old male presents with sudden, severe, unprovoked right shoulder pain lasting for 2 weeks. As the pain subsides, he notices profound weakness in shoulder abduction and external rotation. EMG demonstrates denervation potentials in the supraspinatus and infraspinatus muscles. What is the most likely diagnosis?
Correct Answer & Explanation
. Parsonage-Turner syndrome
Explanation
Parsonage-Turner syndrome (acute brachial neuritis) classically presents with an initial phase of severe shoulder girdle pain followed by patchy muscle weakness and atrophy as the pain abates. It most commonly affects the suprascapular nerve, long thoracic nerve, or axillary nerve, and is primarily treated conservatively.
Question 135
Topic: Shoulder & Hip Sports
A 32-year-old professional volleyball player presents with an insidious onset of posterior shoulder pain and progressive weakness in external rotation. Clinical examination shows isolated atrophy of the infraspinatus muscle with a completely normal supraspinatus muscle bulk and strength. Where is the most likely site of nerve compression?
Correct Answer & Explanation
. Spinoglenoid notch
Explanation
Compression of the suprascapular nerve at the spinoglenoid notch affects only the distal branch that supplies the infraspinatus, leading to isolated infraspinatus weakness. Conversely, compression at the suprascapular notch would affect both the supraspinatus and infraspinatus muscles.
Question 136
Topic: Shoulder & Hip Sports
When evaluating a patient with recurrent anterior shoulder instability, what specifically defines an "off-track" Hill-Sachs lesion?
Correct Answer & Explanation
. A Hill-Sachs lesion that is wider than the intact anterior glenoid track, predisposing it to engage.
Explanation
The glenoid track concept evaluates the interaction between glenoid bone loss and the Hill-Sachs lesion. An "off-track" lesion occurs when the Hill-Sachs interval is wider than the remaining intact glenoid track, causing the lesion to engage the anterior glenoid rim during abduction and external rotation.
Question 137
Topic: Shoulder & Hip Sports
A 24-year-old overhead throwing athlete presents with posterior shoulder pain. Physical examination reveals a positive active compression test (O'Brien test) that elicits deep joint pain with the forearm pronated, which is relieved with the forearm in supination. What is the most likely associated finding on MR arthrography?
Correct Answer & Explanation
. Superior labrum anterior to posterior (SLAP) tear
Explanation
The active compression test (O'Brien test) is sensitive for SLAP tears. Pain is characteristically elicited with the arm in internal rotation/pronation (which tensions the biceps root) and relieved when the arm is supinated.
Question 138
Topic: Shoulder & Hip Sports
A 40-year-old male suffers a seizure and subsequently complains of severe right shoulder pain. Radiographs show a "lightbulb" sign on the AP view and an empty glenoid sign. What is the most common associated bony defect seen with this specific injury?
Correct Answer & Explanation
. Reverse Hill-Sachs lesion
Explanation
The patient has a posterior shoulder dislocation, classically caused by seizures or electrical shock. The most common associated defect is a reverse Hill-Sachs lesion, which is an impaction fracture of the anteromedial humeral head.
Question 139
Topic: Shoulder & Hip Sports
In the evaluation of anterior shoulder instability, an Anterior Labroligamentous Periosteal Sleeve Avulsion (ALPSA) lesion differs from a classic Bankart lesion in which of the following ways?
Correct Answer & Explanation
. The anterior scapular periosteum remains intact
Explanation
In an ALPSA lesion, the anterior labrum is avulsed from the glenoid rim, but the anterior scapular periosteum remains intact. This intact periosteal sleeve allows the labroligamentous complex to displace medially and inferiorly.
Question 140
Topic: Shoulder & Hip Sports
A 15-year-old white boy presents to your office with inability to elevate his right shoulder and flex his elbow. He sustained a fall from an all-terrain vehicle 8 weeks ago. He landed on the right shoulder and says his neck was twisted away at the time of fall. He was seen at the local emergency department; skull, chest, cervical and thoracic spine, and shoulder X-rays showed no damage. There was no loss of consciousness and he has no chest pain or breathing difficulties. He was observed in the hospital until stable and was referred to follow up in the hand clinic at 4 weeks and scheduled for an electromyogram. Clinical examination reveals weakness of deltoid, supraspinatus, infraspinatus, teres minor, biceps, brachialis, brachioradialis, and extensor carpi radialis longus. The remainder of his forearm musculature is preserved and he can grasp and release and pinch. Sensations are decreased along the distribution of the axillary nerve. There is 3 cm wasting of his arm and 2 cm of his forearm. Tinel sign is positive around the clavicle. Horner signs are absent and his arm lies against the body. The EMG report shows fibrillation potentials in the weak muscles. The parents are concerned and say they have not seen any improvement. The boy reports that he is now able to flex his elbow. When asked to demonstrate you notice that he flexes his wrist and pronates his forearm to swing his elbow into flexion. What is the least helpful test in further management of this patient?
Correct Answer & Explanation
. Computed tomography scan of the neck
Explanation
Computed tomography scan of the cervical spine will not be of any use as it will neither show the pseudomeningoceles nor provide any information on the brachial plexus. CT scan may be needed in case of a suspected neck injury but does not form part of a brachial plexus workup.
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