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 421
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
DISCUSSION: 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.REFERENCES: 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.Inokuchi W, Ogawa K, Horiuchi Y: Magnetic resonance imaging of suprascapular nerve palsy.J Shoulder Elbow Surg 1998;7;223-227.
Question 422
Topic: Shoulder & Hip Sports
Figure 177 is an intra-articular photograph taken while viewing from the anterior superior portal during arthroscopy of a right shoulder. Which of the following findings identified at the time of surgery would be the most predictive for recurrence following arthroscopic repair of the demonstrated pathology? Review Topic
Correct Answer & Explanation
. Anterior glenoid bone deficiency of 35%
Explanation
Anterior glenoid bone deficiency of 35% is most predictive of recurrence. Figure 177 shows an acute tear of the anterior inferior glenoid labrum consistent with a Bankart lesion. It has been clearly shown that there is a direct relationship between failure (ie, recurrent dislocation) of arthroscopic Bankart repair and anterior glenoid bone loss. Anterior glenoid bone loss of greater than 25% in the setting of anterior glenohumeral instability is a relative contraindication to performing arthroscopic stabilization and instead is an indication to perform a bony glenoid augmentation procedure to address the articular arc deficit. Therefore, an anterior bony defect of 35% is the most predictive finding at the time of surgery for recurrent dislocation. An engaging Hill-Sachs deformity has a significant effect on the rate of redislocation, but a nonengaging one should not. An intra-articular loose body, subacromial bursitis, and a partial-thickness articular-sided supraspinatous tear should not lead to an increased risk of recurrent dislocation following Bankart repair.
Question 423
Topic: Shoulder & Hip Sports
A 22-year-old female collegiate javelin thrower has shoulder pain. She notes that her pain is primarily located in the posterior aspect of her shoulder, is exacerbated with throwing, and she experiences maximal tenderness in the extreme cocking phase of the throwing cycle. On examination, she reports deep posterior shoulder pain when the arm is abducted 90 degrees and maximally externally rotated to 110 degrees. This reproduces her symptoms precisely. Shoulder radiographs are normal. What is the most likely diagnosis? Review Topic
Correct Answer & Explanation
. Internal impingement
Explanation
The patient has internal impingement. Internal impingement is commonly seen in overhead throwing athletes. When positioned in the extreme cocking phase of the throwing cycle, the posterior glenoid impacts the articular surface of the infraspinatus and posterior fibers of the supraspinatus tendon. This impact can cause partial-thickness rotator cuff tearing and posterosuperior labral lesions. She has no evidence of anterior shoulder instability, and her range of motion is excellent which rules out adhesive capsulitis. Subacromial impingement is identified with anterolateral shoulder pain with internal rotation in the abducted position. A full-thickness rotator cuff tear in a 22-year-old individual would require significant trauma and would likely result in pain at rest and with lifting.
Question 424
Topic: Shoulder & Hip Sports
What pathology is most likely to result in failure of an arthroscopic Bankart repair?
Correct Answer & Explanation
. A 25% or greater anterior-inferior glenoid rim defect
Explanation
DISCUSSION: Recent studies have documented that an arthroscopic Bankart repair performed with good technique can produce success rates similar to an open repair. However, the results of an arthroscopic repair deteriorate significantly if there is a 25% or greater anterior-inferior glenoid rim defect (inverted pear configuration) or an engaging Hill-Sachs lesion in which the humeral head defect keys onto the glenoid rim in abduction and external rotation. If either of these entities exist or there is multidirectional instability with pathologic hyperextensible tissue laxity, an open repair is recommended. An associated SLAP lesion would not significantly affect the result of the Bankart procedure. Not infrequently, the anterior glenoid labrum is partially or completely disrupted and, in itself, is not a contraindication to arthroscopic Bankart repair. In almost all patients with predominantly unidirectional instability, some degree of capsular/anterior-inferior glenohumeral ligament attenuation is present and can be addressed during the arthroscopic repair.REFERENCES: Burkhart SS, De Beer JF: Traumatic glenohumeral bone defects and their relationship to failure of arthroscopic Bankart repairs: Significance of the inverted-pear glenoid and the humeral engaging Hill-Sachs lesion. Arthroscopy 2000;16:677-694.Cole BJ, Romeo AA: Arthroscopic shoulder stabilization with suture anchors: Technique, technology, and pitfalls. Clin Orthop 2001;390:17-30.
Question 425
Topic: Shoulder & Hip Sports
A 50-year-old pipefitter falls from a ladder at work and dislocates his non-dominant shoulder. His MRI scan shows supraspinatus and infraspinatus tears with retraction to the glenoid. He cannot actively raise his arm away from his side. He denies prior shoulder symptoms before his fall. Three weeks of physical therapy have failed to improve his function. Which factor has been demonstrated to result in a poor clinical outcome following surgical intervention?
Correct Answer & Explanation
. The patient's age
Explanation
Several studies have demonstrated that patients with work-related injuries do not do as well as those whose injuries are not work-related after repair of the rotator cuff. This patient’s age and gender are not negative prognostic indicators. The acute nature of the tear does not lead to an inferior outcome.
Question 426
Topic: Shoulder & Hip Sports
-The patient experienced little improvement with activity modification and physical therapy. An intraarticular corticosteroid injection provides excellent but short-lived pain control. She requests surgical treatment for her hip and she is counseled regarding arthroscopy and consent is obtained. Intraoperatively,a capsulolabral separation is observed with an underlying pincer lesion. No articular cartilage injury is seen. What treatment is most appropriate considering these findings?
Correct Answer & Explanation
. Suture anchor repair of the labral tear and bony resection of the pincer lesion
Explanation
DISCUSSION FOR QUESTIONS 26 THROUGH 29The clinical scenario, examination, and MRI scans are consistent with a pincer-type FAI. The decreased range of motion is secondary to the pain produced by the continued abutment of the femoral head against the anterosuperior acetabulum. Flexing the hip while internally rotating and adducting the leg recreates this contact and is typically painful. No clinical signs suggest sacroiliac joint arthritis, an intra-articular loose body, or trochanteric bursitis, although these are all diagnoses that should be considered in a patient with a painful hip. The most sensitive and specific study to detect an acetabular labral tear is an MRI arthrogram of the hip. This study should be obtained in this patient to evaluate the labrum as well as the status of the articular cartilage. An MRI scan without intra-articular contrast is not as sensitive as an arthrogram. An ultrasound can provide a dynamic assessment of the hip and help in the setting of a snapping hip; however, this study is not reliable to determine the presence of a labral tear. In the setting of pincer FAI, the forced leverage of the anterosuperior femoral head upon the anterior acetabulum results in abnormal forces against the posteroinferior acetabulum. This continued force can lead to a chondral lesion in this location know as a “counter-coup” injury. Chondral lesions of the femoral head are rare in the setting of pincer FAI. The posterosuperior quadrant does not experience increased force and rarely sustains chondral injuries. The patient is a young, active individual with no pre-existing degenerative changes, so repair of the tear with bony resection of the pincer lesion is the most appropriate treatment.A capsulolabral detachment should be repaired because these tears can heal and the labrum functions as a seal, preventing egress of synovial fluid from the joint space. If the pincer lesion is not resected, the patient will continue to experience abnormal contact and the repair will likely fail. There is no evidence that the patient has a cam impingement, and recontouring of the femoral head/neck junction is not appropriate. Simple debridement should be reserved for intrasubstance tears of the labrum, which would not be expected to heal with repair.CLINICAL SITUATION FOR QUESTIONS 30 THROUGH 32Figures 30a and 30b are the radiographs of a 20-year-old college multisport athlete who has had longstanding pain in his left hip. He denies any specific event that initiated his pain, but he notes that he had hip problems when he was an infant. He denies pain with activities of daily living, but hebelieves his pain is increasingly limiting his ability to exercise. He localizes the pain to his groin. He denies low-back or buttock pain or pain that radiates down his leg.
Question 427
Topic: Shoulder & Hip Sports
Figure 1 is the clinical photograph of a 22-year-old college pitcher who complains of posterior shoulder pain and feelings of shoulder weakness. He denies shoulder trauma. Evaluation should include
Correct Answer & Explanation
. CT scan of the shoulder.
Explanation
Figures 1 and 2 are the CT and MRI scans of a 23-year-old man with a history of recurrent anterior shoulder dislocations. He had his first dislocation while in basic training for the military 4 years ago. Since that time, his shoulder has dislocated with less and less provocation, to the point that it now dislocates in his sleep. Examination demonstrates significant apprehension with abduction/external rotation. What is the most appropriate treatment to prevent recurrent shoulder instability?
Question 428
Topic: Shoulder & Hip Sports
Figure 1 is the T2 coronal MRI scan of a 52-year-old woman with a 6- month history of shoulder pain. She does not recall a history of trauma. Physical therapy is recommended. What is the most significant predictor of failure of nonoperative treatment?
Correct Answer & Explanation
. Tear size
Explanation
Figures 1 through 3 are the MRI scans of a 51-year-old active man who injured his right shoulder after a fall while sailing 4 days ago. Optimal surgical management of the patient’s pathology is expected to involve
Question 429
Topic: Shoulder & Hip Sports
A 45-year-old man sustained the injury seen in Figure 130a 6 weeks ago. He denies any prior injury to his shoulder. After treatment of the injury in the emergency department, he was noted to have significant weakness with empty can testing and external rotation at the side. He has full passive range of motion with forward flexion, abduction, and internal and external rotation, but has difficulty initiating abduction with his arm at his side. He has negative apprehension and relocation signs. A detailed neurologic examination shows no deficits. A coronal image from a follow-up MRI scan is seen in Figure 130b. Follow-up radiographs reveal no fractures. What is the most appropriate next step in his treatment? Review Topic
Correct Answer & Explanation
. Rotator cuff repair
Explanation
The most likely concern, in a patient older than age 40 having a first-time shoulder dislocation, is a rotator cuff tear. The MRI scan shows a tear of the supraspinatus tendon. Recurrent instability is less likely to be a problem, so an external rotation brace for an extended period of time is unnecessary. The patient already has good passive range of motion, and with a full-thickness rotator cuff tear, physical therapy alone is unlikely to return him to full function. The MRI scan shows no labral tear, so arthroscopic or open repair is not indicated.
Question 430
Topic: Shoulder & Hip Sports
Figure 1 is the radiograph of a 21-year-old college lacrosse player who has a 2-year history of progressive left groin pain that is exacerbated by activity. Pain is preventing him from participating with his team. Examination reveals a fit man without tenderness to palpation around the hip. No clicking or popping occurs with hip range of motion. Strength of all muscles about the hip is normal, but there is some mild pain with resisted hip flexion and hip adduction. While lying supine, progressive hip flexion with internal rotation and adduction reproduces his groin pain. The patient experiences little improvement with activity modification and more physical therapy. An intra-articular corticosteroid injection provides excellent relief, but relief only lasts for 1 month. The player requests further treatment for his hip and is counseled regarding surgical intervention. Hip arthroscopy is performed. Intraoperatively, a capsulolabral separation is observed with an underlying pincer lesion. No articular cartilage injury is seen. Which treatment is most appropriate considering these findings?
Correct Answer & Explanation
. Resection of the bony pincer lesion plus labral repair using suture anchor
Explanation
This clinical scenario describes a patient with FAI attributable to pincer (acetabular) deformity. This form of FAI, which involves prominence of the anterosuperior acetabular lip, may be more common among women. Decreased range of motion and pain occur secondary to the abutment of the femoral head against the acetabular labrum and rim. Hip flexion, combined with adduction and internal rotation, recreates this contact and causes pain, but CAM or pincer etiology remains unknown. The differential diagnosis of hip pain in a young athlete includes femoral neck stress reaction/fracture, sacroiliac arthritis, intra-articular loose body, trochanteric bursitis, osteitis pubis, and hernia. No information presented in this scenario suggests any of these causes. Diagnosis of FAI is best performed via MR imaging, with an arthrogram increasing the sensitivity and specificity for labral pathology. Ultrasonography may be useful in the diagnosis of dysplasia or for dynamic assessment of a snapping hip, but ultrasonography is not commonly used to diagnose labral pathology. Although concomitant chondral lesions of the femoral head are uncommon, the forced leverage of the anterosuperior femoral neck upon the anterior acetabulum may result in a “contra-coup” chondral injury on the posteroinferior acetabulum. This is the most common location of chondral lesions in this scenario. Without bony resection to prevent further impingement, this patient will continue to experience symptoms. Because there is no evidence of femoral neck prominence (CAM lesion), there is no indication for osteoplasty of the femoral neck; resection of the pincer lesion is necessary. This will often require take-down of the labrum in this location. If possible, iatrogenic or traumatic labral tears should subsequently be repaired after pincer debridement because the labrum hasimportant functions for hip stability and maintenance of the suction seal of the joint.
Question 431
Topic: Shoulder & Hip Sports
A 32-year-old volleyball player has dull posterior shoulder pain. An examination reveals moderate external rotation weakness with his arm at his side, but normal strength on supraspinatus isolation. Deltoid and supraspinatus bulk appear normal, although there appears to be mild infraspinatus atrophy. Sensation is normal throughout the shoulder and shoulder girdle. What is the most likely diagnosis?
Correct Answer & Explanation
. Spinoglenoid notch cyst
Explanation
DISCUSSIONThis clinical scenario describes a patient with an isolated injury affecting the infraspinatus muscle. The anatomic location of such a lesion would be at the spinoglenoid notch, at which the suprascapular nerve may be compressed distal to its innervation of the supraspinatus but proximal to the infraspinatus innervation. A calcified transverse scapular ligament would also affect the suprascapular nerve but is proximal to the innervation of both muscles. Quadrilateral space syndrome would affect innervation of the deltoid (and teres minor). Parsonage-Turner syndrome is a more diffuse, and often severely painful, brachial plexus neuropathy.
Question 432
Topic: Shoulder & Hip Sports
A 40-year-old man has had hip pain with increased activity over the past year. Examination reveals restriction of motion and tenderness with combined hip flexion, adduction, and internal rotation. An AP radiograph is shown in Figure 34. What is the most likely diagnosis?
Correct Answer & Explanation
. Femoral acetabular impingement
Explanation
DISCUSSION: Femoral acetabular impingement (FAI) is a pathologic entity leading to pain, reduced range of motion in flexion and internal rotation, and development of secondary arthritis of the hip. There are two types of FAI: cam impingement and pincher impingement. Cam impingement is seen when a nonspherical femoral head produces a cam effect when the prominent portion to the femoral head rotates into the joint. This mechanism produces shear forces that damage articular cartilage. Radiographs reveal early joint degeneration and flattening of the head neck junction (the so-called “pistol grip deformity”) as seen in this image. The pincher type of impingement involves abnormal contact between the femoral head neck junction and the acetabulum, in the presence of a spherical femoral head.REFERENCES: Beall DP, Sweet CF, Martin HD, et al: Imaging findings of femoraoacetabular impingement syndrome. Skeletal Radiol 2005;34:691-701.Mardones RM, Gonzalez C, Chen Q, et al: Surgical treatment of femoroacetabular impingement: Evaluation of the effect of the size of the resection. J Bone Joint Surg Am 2006;88:84-91.
Question 433
Topic: Shoulder & Hip Sports
A 20-year-old collegiate pitcher has had a 5-month history of shoulder pain while throwing, decreased velocity, and difficulty with location of his pitches despite multiple attempts at rest. He reports no traumatic event. Examination with his throwing arm abducted at 90 degrees reveals external rotation to 110 degrees and internal rotation to 70 degrees when compared with his nonthrowing shoulder which has external rotation to 95 degrees and internal rotation to 85 degrees. He has a positive O'Brien's sign, positive modified Jobe's relocation test, full rotator cuff strength, no obvious muscular atrophy, and no scapular winging. Radiographs of the affected shoulder show no abnormalities. What is the next most appropriate step in management? Review Topic
Correct Answer & Explanation
. MR arthrogram of the throwing shoulder
Explanation
The study of choice to evaluate the superior labrum is an MR arthrogram. The patient has symptoms suspicious for superior labral pathology (ie, positive O'Brien's test, Jobe's relocation test, pain with throwing, loss of velocity and location). Whereas he does have increased external rotation and decreased internal rotation of his throwing arm compared with his non-throwing arm, the total arc of motion is 180 degrees and this is considered a normal adaptive change in the overhead throwing athlete; therefore, ultrasound is not considered appropriate management. There are no signs of weakness or rotator cuff pathology to suggest suprascapular nerve compression or a full-thickness rotator cuff tear; therefore, electrodiagnostic testing or physical therapy are inappropriate. There are also no signs or symptoms suggesting infection or rheumatologic issues; therefore, laboratory studies are unnecessary. If the MR arthrogram shows a labral tear, the initial management would include posterior capsular stretching and rotator cuff strengthening.
Question 434
Topic: Shoulder & Hip Sports
-A collegiate offensive football lineman has decreased bench-press strength and shoulder pain as off-season workouts begin. Examination revealed no atrophy, and deltoid and rotator cuff strength testing findings were normal. Translational testing was difficult to achieve because of his large size.Apprehension and relocation test findings were negative. An O’Brien’s active compression test result was negative. Jerk testing was positive on the affected side. Which diagnosis is most likely revealed on an MRI arthrogram?
Correct Answer & Explanation
. SLAP tear
Explanation
Question 435
Topic: Shoulder & Hip Sports
Decreased risk of shoulder and elbow injury in a throwing athlete has been demonstrated with which of the following? Review Topic
Correct Answer & Explanation
. Rotator cuff strengthening
Explanation
Posterior capsular contracture has been demonstrated to significantly impair the ability of the humeral head to translate anterior and inferiorly during the late cocking and early acceleration phases of the throwing motion. This results in an obligatory posterosuperior translation of the humeral head that may contribute to posterior superior glenohumeral internal impingement with posterosuperior labral and articular-sided rotator cuff pathology. Posterior capsular stretching in throwing athletes has been demonstrated to decrease the likelihood of clinically significant shoulder or elbow injury. Periscapular muscle and rotator cuff strengthening are important for optimal scapulothoracic rhythm, stable scapular position for throwing, and rotator cuff function but less directly established to result in a decreased risk of shoulder and elbow injury than posterior capsular stretching. Partial-thickness rotator cuff repair and superior labral repair may be necessary for treatment of symptomatic lesions unresponsive to nonsurgical management, but these do not necessarily correlate with decreased shoulder and elbow injury risk.
Question 436
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
DISCUSSION: 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.REFERENCES: Jerosch J, Strauss JM, Schmiel S: Arthroscopic treatment of calcific tendinitis of the shoulder. J Shoulder Elbow Surg 1998;7:30-37.Ark JW, Flock TJ, Flatow EL, Bigliani LU: Arthroscopic treatment of calcific tendinitis of the shoulder. Arthroscopy 1992;8:183-188.
Question 437
Topic: Shoulder & Hip Sports
A right-handed 24-year-old woman underwent an arthroscopic Bankart repair for recurrent anterior dislocations 9 months ago. Despite extensive physical therapy for 8 months, the patient has very limited range of motion (elevation to 130 degrees and external rotation to 10 degrees with the arm at the side). Shoulder radiographs are normal. The next step in management should consist of
Correct Answer & Explanation
. arthroscopic capsular release.
Explanation
DISCUSSION: Arthroscopic capsular release is an effective means of treating stiffness that is the result of capsular contractures, such as in the case of a tight Bankart repair. Open release allows lengthening of a surgically shortened subscapularis, such as after a tight Putti-Platt repair. Additional physical therapy is unlikely to be effective because 8 months of treatment has failed to result in improvement. Accepting this degree of asymptomatic limited motion is not advisable because of the functional limitations for the patient and the increased risk of postoperative degenerative arthritis.REFERENCES: Warner JJ, Allen AA, Marks PH, Wong P: Arthroscopic release of postoperative capsular contracture of the shoulder. J Bone Joint Surg Am 1997;79:1151-1158.Harryman DT II, Matsen FA III, Sidles JA: Arthroscopic management of refractory shoulder stiffness. Arthroscopy 1997;13:133-147.
Question 438
Topic: Shoulder & Hip Sports
A 35-year-old recreational basketball player reports shoulder pain following a sprawl for a rebound. While examination reveals that he can actively elevate the arm with pain, a subacromial injection fails to provide relief. An MRI scan reveals medial subluxation of the long head of the biceps. Which of the following structures most likely has also been injured?
Correct Answer & Explanation
. Subscapularis tendon
Explanation
DISCUSSION: Subscapularis tears can be associated with disruption of the transverse ligament supporting the biceps. The remaining aspects of the rotator cuff, superior labrum, and capsule can be intact with this injury.REFERENCES: Petersson CJ: Spontaneous medial dislocation of the tendon of the long biceps brachii. Clin Orthop 1986;211:224-227.Gerber C, Sebesta A: Impingement of the deep surface of the subscapularis tendon and the reflection pulley on the anterosuperior glenoid rim: A preliminary report. J Shoulder Elbow Surg 2000;9:483-490.
Question 439
Topic: Shoulder & Hip Sports
A football lineman who sustained a traumatic injury while blocking during a game now reports that his shoulder is slipping while pass blocking. Examination reveals no apprehension in abduction and external rotation; however, he reports pain with posterior translation of the shoulder. He has full strength in external rotation, internal rotation, and supraspinatus testing. What is the pathology most likely responsible for his symptoms? Review Topic
Correct Answer & Explanation
. Anterior glenoid rim fracture tear
Explanation
Traumatic posterior instability is a common finding in football players, especially in the blocking positions as well as in the defensive linemen and linebackers. A traumatic blow to the outstretched arm results in posterior glenohumeral forces. Labral detachment at the glenoid rim is common. Patients report slipping or pain with posteriorly directed pressure. Rarely do these patients have true dislocations that require reduction; however, recurrent episodes of subluxation or pain are not uncommon. Posterior repair has been shown to be successful in the treatment of traumatic instability.
Question 440
Topic: Shoulder & Hip Sports
A 27-year-old man has recurrent right shoulder instability. He first dislocated his shoulder in college while playing rugby and was treated nonsurgically. Since then, he has sustained nearly 1 dozen dislocations and says that his shoulder always feels “loose.” The shoulder recently dislocated in his sleep and while he was putting on clothes. Which factor is a contraindication to an arthroscopic soft-tissue repair?
Correct Answer & Explanation
. A 270-degree labral tear
Explanation
DISCUSSIONThere is much debate in the literature regarding optimal techniques for treatment of shoulder instability. Although some studies suggest that open stabilization may result in lower recurrence rates in contact athletes, this approach is now under scrutiny. Extensive labral involvement (posterior labral involvement in this scenario) is likely more accessible via arthroscopic methods. Although HAGL lesions may be more easily accessible via an open approach (particularly for inexperienced arthroscopists), numerous authors describe successful repair via arthroscopic techniques. Among these responses, the strongest indication for an open approach, including possible bony transfer, is high-grade glenoid bone loss. Although the critical amount of bone loss is a topic of debate, most surgeons and authors suggest a cutoff of 20% to 25%.CLINICAL SITUATION FOR QUESTIONS 90 THROUGH 92Figure 90 is the radiograph of a 14-year-old pitcher who plays in a year-round baseball program and has vague pain in his dominant shoulder. The pain occurs with throwing, and it has been worsening for 2 months. Pain typically occurs during the late cocking phase of throwing. He has no tenderness of the rotator cuff and 5/5 rotator cuff strength. His arc of motion is symmetric between his dominant and nondominant arms. The sulcus sign is negative.
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