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 821
Topic: Shoulder & Hip Sports
A 25-year-old tennis player has shoulder pain and weakness to external rotation. MRI scans are shown in Figures 16a and 16b. What is the most likely cause of his weakness?
Correct Answer & Explanation
. Suprascapular nerve compression
Explanation
The MRI scans show a paralabral cyst, which is most commonly associated with labral tears. Compression of the suprascapular nerve results in weakness of the supraspinatus and/or infraspinatus depending on the level of compression. Piatt BE, Hawkins RJ, Fritz RC, et al: Clinical evaluation and treatment of spinoglenoid notch ganglion cysts. J Shoulder Elbow Surg 2002;11:600-604.
Question 822
Topic: Shoulder & Hip Sports
A 60-year-old right hand-dominant women fell on her outstretched arm and sustained an anterior shoulder dislocation. The shoulder is reduced in the emergency department and she is seen for follow-up 1 week later wearing a sling. Examination reveals that she has significant difficulty raising her arm in forward elevation and has excessive external rotation compared to the contralateral shoulder. What is the next most appropriate step in management?
Correct Answer & Explanation
. MRI
Explanation
In patients older than age 40 years, a high suspicion of a rotator cuff tear should be kept in those patients with weakness after shoulder dislocation. Both posterior rotator cuff and subscapularis injuries have been documented. The next most appropriate step in management should be MRI. If the findings are negative, suspicion of nerve injury should lead to electromyography. Stayner LR, Cumming J, Andersen J, et al: Shoulder dislocations in patients older than 40 years of age. Orthop Clin North Am 2000;31:231-239.
Question 823
Topic: Shoulder & Hip Sports
A patient underwent anterior stabilization of the shoulder 6 months ago, and examination now reveals lack of external rotation beyond 0 degrees. The patient has a normal apprehension sign and normal strength, and the radiographs are normal. Based on these findings, the patient is at greater risk for the development of
Correct Answer & Explanation
. osteoarthritis.
Explanation
Because the patient's shoulders are overtensioned anteriorly, premature osteoarthritis may develop. This may create obligate translation posteriorly and increase the interarticular pressure of the humeral head against the glenoid. Patients should achieve 20 degrees to 30 degrees of external rotation with the elbow at the side. Late degenerative arthritis following a Putti-Platt procedure is associated with significant restriction of external rotation. This patient's shoulder has a reduced risk of anterior instability, rotator cuff tear, and internal impingement because of the limitation of motion. Hawkins RJ, Angelo RL: Glenohumeral osteoarthritis: A late complication of the Putti-Platt repair. J Bone Joint Surg Am 1990;72:1193-1197.
Question 824
Topic: Shoulder & Hip Sports
A 22-year-old volleyball player reports the insidious onset of superior and posterior shoulder pain. Radiographs are normal. An MRI scan is shown in Figure 25. What is the most specific physical examination finding?
Correct Answer & Explanation
. Weakness of external rotation
Explanation
Overhead athletes are prone to a number of problems involving the shoulder. Pitchers and volleyball players are susceptible to posterior superior labral tears and internal impingement. These patients will have posterior superior shoulder pain, a positive relocation sign, and a positive active compression test. Occasionally, these posterior superior labral tears are associated with a spinoglenoid cyst as seen in the MRI scan. These cysts cause compression of the suprascapular nerve which manifests primarily as weakness of the infraspinatus, resulting in weakness of external rotation. Romeo AA, Rotenberg DD, Bach BR Jr: Suprascapular neuropathy. J Am Acad Orthop Surg 1999;7:358-367.
Question 825
Topic: Shoulder & Hip Sports
Figure 52 shows the MRI scan of a 28-year-old baseball pitcher. Examination will most likely reveal which of the following findings?
Correct Answer & Explanation
. Weakness of the deltoid
Explanation
A ganglion cyst compressing the suprascapular nerve results in poorly localized pain in the shoulder girdle. Sensation is intact, with weakness of external rotation and abduction. Supraspinatus and infraspinatus atrophy is often noted when viewed from behind. These cysts are typically associated with labral tears. Deltoid weakness is associated with an axillary nerve injury, and scapular winging results from injury to the long thoracic nerve. Piatt BE, Hawkins RJ, Fritz RC, et al: Clinical evaluation and treatment of spinoglenoid notch ganglion cysts. J Shoulder Elbow Surg 2002;11:600-604.
Question 826
Topic: Shoulder & Hip Sports
A 40-year-old woman who is an avid tennis player reports the insidious onset of progressive left shoulder pain for the past 2 months. Examination reveals full range of motion with a positive impingement sign. Strength in the supraspinatus and infraspinatus muscles is normal, although stress testing is painful. An earlier subacromial cortisone injection provided good, but only temporary relief. An AP radiograph of the left shoulder is shown in Figure 10. Management should now consist of
Correct Answer & Explanation
. arthroscopic evacuation of calcium deposits.
Explanation
The radiograph shows calcific deposits within the substance of the supraspinatus tendon. Patients with this condition are prone to recurrent bouts of acute inflammation in the shoulder. While the response to cortisone injection is often dramatic, repeated injections are not recommended because of injury to the collagen fibers. Good results have been obtained with arthroscopic evacuation of the calcium deposits. In one study, the addition of a subacromial decompression did not improve the results. Jerosch J, Strauss JM, Schmiel S: Arthroscopic treatment of calcific tendinitis of the shoulder. J Shoulder Elbow Surg 1998;7:30-37.
Question 827
Topic: Shoulder & Hip Sports
Figures 25a and 25b show the clinical photographs of a 19-year-old baseball outfielder who has shoulder pain after sliding headfirst into second base. He reports pain while batting, sliding, and catching. Examination reveals a posterior prominence during midranges of forward elevation, which then disappears with a palpable clunk during terminal elevation and abduction. What is the most likely diagnosis?
Correct Answer & Explanation
. Posterior glenohumeral subluxation
Explanation
A headfirst slide with the arm extended can injure the posterior shoulder. Winging of the scapula is dynamic and is considered a compensatory effort to prevent subluxation; it is not related to nerve injury. Posterior glenohumeral subluxation can be present during the initiation of a bat swing. Rotator cuff function, interval tears, and superior labrum tears can be painful but do not produce winging. Kuhn JE, Plancher KD, Hawkins RJ: Scapular winging. J Am Acad Orthop Surg 1995;3:319-325.
Question 828
Topic: Shoulder & Hip Sports
Figure 30 shows an axial T1-weighted MRI scan of a patient's right shoulder. The arrows are pointing to what normal structure?
Correct Answer & Explanation
. Pectoralis major tendon
Explanation
Tears of the pectoralis major tendon are frequently missed during examination. MRI provides excellent visualization of the tendon if the study extends low enough down the arm. The pectoralis major tendon inserts on the crest of the greater tubercle of the humerus, just lateral to the long head of the biceps tendon. The latissimus dorsi tendon inserts medial to the long head of the biceps tendon on the lesser tubercle. The subscapularis tendon inserts on the lesser tuberosity more proximally. The deltoid insertion is more distal. Connell DA, Potter HG, Sherman MF, et al: Injuries of the pectoralis major muscle: Evaluation with MR imaging. Radiology 1999;210:785-791. Carrino JA, Chandnanni VP, Mitchell DB, et al: Pectoralis major muscle and tendon tears: Diagnosis and grading using magnetic resonance imaging. Skeletal Radiol 2000;29:305-313.
Question 829
Topic: Shoulder & Hip Sports
A 55-year-old man who works as a carpenter reports chronic right anterior shoulder pain and weakness. Examination reveals 90 degrees of external rotation (with the arm at the side) compared to 45 degrees on the left side. His lift-off examination is positive, along with a positive belly press finding. An MRI scan reveals a chronic, retracted atrophied subscapularis tendon. What is the most appropriate management of his shoulder pain and weakness?
Correct Answer & Explanation
. Pectoralis major transfer
Explanation
Chronic subscapularis tendon ruptures preclude primary repair. In such instances, subcoracoid pectoralis major tendon transfers may improve function and diminish pain. The subcoracoid position of the transfer allows redirection of the pectoralis major in a direction recreating the vector of the subscapularis tendon. Shoulder fusion is a salvage procedure, and corticosteroid injection may reduce pain but will not improve function. Jost B, Puskas GJ, Lustenberger A, et al: Outcome of pectoralis major transfer for the treatment of irreparable subscapularis tears. J Bone Joint Surg Am 2003;85:1944-1951.
Question 830
Topic: Shoulder & Hip Sports
A 47-year-old man has acute right shoulder pain after falling off a ladder. The MRI scan shown in Figure 9 reveals
Correct Answer & Explanation
. a full-thickness rotator cuff tear.
Explanation
The MRI scan reveals a full-thickness rotator cuff tear with retraction and increased signal in the subacromial space indicating joint fluid. Herzog RJ: Magnetic resonance imaging of the shoulder. Instr Course Lect 1998;47:3-20.
Question 831
Topic: Shoulder & Hip Sports
A 21-year-old pitcher reports shoulder pain with hard throwing. He notes that the pain occurs in the early acceleration phase of his throw. Given his history, what structures are at greatest risk for injury?
Correct Answer & Explanation
. Posterosuperior labrum, greater tuberosity, articular side of the rotator cuff
Explanation
Internal impingement in the thrower's shoulder occurs in the abducted, externally rotated position as described by Walch and associates. The injury is thought to occur from repetitive contact between the posterosuperior portion of the labrum and glenoid against the articular side of the rotator cuff and greater tuberosity.
Question 832
Topic: Shoulder & Hip Sports
A 22-year-old volleyball player has atrophy of the infraspinatus muscle. This deficit is the result of entrapment of what nerve?
Correct Answer & Explanation
. Suprascapular nerve in the spinoglenoid notch
Explanation
Suprascapular deficits, as the result of repetitive forceful internal rotation with overhead ball striking, occur in the spinoglenoid notch. Compression interferes with distal suprascapular nerve innervation to the infraspinatus, while allowing the supraspinatus to function normally. A scapular notch entrapment of this nerve would involve both the supraspinatus and the infraspinatus. The axillary, dorsal scapular, and subscapular nerves do not affect the infraspinatus. Ferretti A, Cerullo G, Russo G: Suprascapular neuropathy in volleyball players. J Bone Joint Surg Am 1987;69:260-263.
Question 833
Topic: Shoulder & Hip Sports
A 73-year-old man who underwent repair of the left rotator cuff 6 years ago reports good pain relief but notes residual weakness of the left shoulder, especially with overhead tasks. He denies having pain at night and has minimal discomfort with activities of daily living but is dissatisfied with his shoulder strength. Radiographs show an acromiohumeral interval of 2 mm. Appropriate management should consist of
Correct Answer & Explanation
. an exercise program.
Explanation
An exercise program to strengthen the deltoid and remaining rotator cuff will most likely offer the best results. Revision rotator cuff surgery yields better results in decreasing pain than improving strength and function, and this patient has only minimal pain. Tendon transfers, involving the use of the latissimus dorsi or teres major, have been used when the rotator cuff is deemed irreparable but are not indicated in elderly patients with minimal symptoms. Bigliani LU, Cordasco FA, McIlveen SJ, Musso ES: Operative treatment of failed repairs of the rotator cuff. J Bone Joint Surg Am 1992;74:1505-1515. DeOrio JK, Cofield RH: Results of a second attempt at surgical repair of a failed initial rotator-cuff repair. J Bone Joint Surg Am 1984;66:563-567.
Question 834
Topic: Shoulder & Hip Sports
A 52-year-old man has had right shoulder pain in the deltoid region that increases at night for the past 2 months. He denies any history of trauma. Examination reveals mild tenderness over the greater tuberosity, and the Neer and Hawkins impingement signs are positive. AP and outlet lateral radiographs are shown in Figures 24a and 24b. Initial management should consist of
Correct Answer & Explanation
. a program of stretching exercises and rotator cuff strengthening exercises.
Explanation
The patient has the findings of classic subacromial impingement. Initial management should consist of stretching exercises directed at the posterior capsule and a program of rotator cuff and deltoid strengthening exercises performed below the horizontal in a "safe" plane. The judicious use of subacromial cortisone injections (one or two) may be helpful. Anterior acromioplasty is reserved for patients who have failed to respond to nonsurgical management. Morrison DS, Frogameni AD, Woodworth P: Non-operative treatment of subacromial impingement syndrome. J Bone Joint Surg Am 1997;79:732-737. Neer CS: Impingement lesions. Clin Orthop 1983;173:70-77.
Question 835
Topic: Shoulder & Hip Sports
A 21-year-old college football player experiences recurrent anterior shoulder dislocations. Imaging demonstrates a bony Bankart lesion involving 25% of the anterior glenoid width and an engaging Hill-Sachs lesion. Which procedure is most appropriate to stabilize this shoulder and prevent recurrence?
Correct Answer & Explanation
. Latarjet procedure
Explanation
For high-demand contact athletes with critical anterior glenoid bone loss (typically >20-25%) or bipolar bone loss with an engaging Hill-Sachs lesion, isolated arthroscopic soft-tissue repair has an unacceptably high failure rate. A bony augmentation procedure, such as the Latarjet (coracoid transfer), is indicated to restore the glenoid articular arc and provide a sling effect.
Question 836
Topic: Shoulder & Hip Sports
During arthroscopic stabilization for recurrent anterior shoulder instability in a 22-year-old rugby player, the surgeon encounters an ALPSA (Anterior Labroligamentous Periosteal Sleeve Avulsion) lesion. Which of the following morphologic features distinguishes an ALPSA lesion from a classic Bankart lesion?
Correct Answer & Explanation
. Medial displacement and subsequent healing of the labrocapsular complex along the anterior glenoid neck
Explanation
An ALPSA lesion is distinguished from a classic soft-tissue Bankart lesion by the intact anterior periosteal sleeve. The labrum and periosteum strip off the glenoid face and roll medially down the anterior glenoid neck, often healing in an abnormal, medially displaced position. A classic Bankart involves a discrete detachment of the labrum with a rupture of the periosteum, without the medial rolling/healing.
Question 837
Topic: Shoulder & Hip Sports
A 68-year-old male is evaluated for a massive, retracted rotator cuff tear involving the supraspinatus and infraspinatus. The surgeon notes significant fatty infiltration of the muscle bellies on the sagittal T1-weighted MRI. According to the Goutallier classification, which stage represents the critical prognostic threshold where there is an equal amount of fat and muscle within the muscle belly?
Correct Answer & Explanation
. Stage 3
Explanation
The Goutallier classification evaluates fatty infiltration of the rotator cuff muscles, which correlates strongly with failure rates after surgical repair. Stage 0 is normal muscle. Stage 1 has occasional fatty streaks. Stage 2 has more muscle than fat. Stage 3 has an equal amount of fat and muscle. Stage 4 has more fat than muscle. Stage 3 represents the critical prognostic turning point; repairs attempted on Stage 3 and Stage 4 muscles have extremely high failure rates and poorer clinical outcomes.
Question 838
Topic: Shoulder & Hip Sports
A 21-year-old collegiate football player sustains a recurrent anterior shoulder dislocation. A pre-operative 3D CT scan reveals a bipolar bone loss pattern, with an engaging Hill-Sachs lesion and an anterior glenoid bone defect measuring 28% of the glenoid width. What is the most appropriate surgical intervention to prevent further instability?
Correct Answer & Explanation
. Latarjet procedure (coracoid transfer to anterior glenoid)
Explanation
Subcritical glenoid bone loss (<15-20%) may be managed with arthroscopic stabilization (with or without remplissage). However, critical glenoid bone loss (>20-25%) in a contact athlete is a strong indication for a bony augmentation procedure. The Latarjet procedure transfers the coracoid process to the anterior glenoid, providing both a bony block and a dynamic muscular sling.
Question 839
Topic: Shoulder & Hip Sports
A 22-year-old collegiate wrestler undergoes an MRI arthrogram after sustaining a traumatic anterior shoulder dislocation. The imaging reveals that the anterior labrum is torn and displaced medially along the glenoid neck, but the anterior periosteum remains intact, forming a sleeve. What is the specific eponym for this lesion?
Correct Answer & Explanation
. ALPSA lesion
Explanation
An ALPSA (Anterior Labroligamentous Periosteal Sleeve Avulsion) lesion occurs when the anterior labrum is torn and rolls medially along the glenoid neck while the periosteum remains intact. A Bankart lesion is a frank detachment of both the labrum and periosteum. A Perthes lesion has an intact periosteum with a non-displaced torn labrum. GLAD is Glenolabral Articular Disruption (involving cartilage). HAGL is Humeral Avulsion of the Glenohumeral Ligament.
Question 840
Topic: Shoulder & Hip Sports
During the arthroscopic repair of a massive, retracted, U-shaped posterosuperior rotator cuff tear, the surgeon elects to perform margin convergence prior to tendon-to-bone fixation. Which of the following best explains the primary biomechanical advantage of margin convergence?
Correct Answer & Explanation
. Side-to-side suturing of the anterior and posterior leaflets reduces strain on the free margin of the tendon at the bone
Explanation
Margin convergence is a technique popularized by Burkhart for repairing large, U-shaped rotator cuff tears. Suturing the anterior and posterior limbs of the tear side-to-side (moving laterally toward the footprint) causes the free margin of the tear to converge toward the greater tuberosity. Biomechanically, this significantly decreases the strain (tension) at the critical tendon-to-bone repair site, reducing the likelihood of repair failure.
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