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Question 5261

Topic: Shoulder & Hip Sports

A 55-year-old manual laborer presents with an irreparable posterosuperior rotator cuff tear. He has significant external rotation weakness and a positive hornblower's sign, but intact forward elevation (pseudoparesis of external rotation). The subscapularis is intact. Which of the following is the most appropriate tendon transfer for this patient?

. Pectoralis major transfer
. Latissimus dorsi transfer
. Lower trapezius transfer
. Rhomboid major transfer
. Biceps rerouting

Correct Answer & Explanation

. Lower trapezius transfer


Explanation

The lower trapezius transfer has a line of pull that closely replicates the native infraspinatus vector. This makes it an excellent surgical option to restore external rotation in isolated, irreparable posterosuperior cuff tears.

Question 5262

Topic: Shoulder & Hip Sports

A 40-year-old male presents with acute, severe, unremitting right shoulder pain lasting for 3 weeks, which has recently begun to subside. However, he now notices profound weakness in lifting his arm. Exam shows atrophy of the deltoid and supraspinatus. MRI of the shoulder is unremarkable. EMG shows denervation in the axillary and suprascapular nerve distributions. What is the most likely diagnosis?

. Acute C5 radiculopathy
. Brachial neuritis (Parsonage-Turner syndrome)
. Quadrilateral space syndrome
. Pancoast tumor
. Myasthenia gravis

Correct Answer & Explanation

. Brachial neuritis (Parsonage-Turner syndrome)


Explanation

Parsonage-Turner syndrome (brachial neuritis) classically presents with severe, acute shoulder pain lasting weeks, followed by patchy muscle weakness and atrophy as the pain subsides. It frequently involves multiple upper trunk nerves, notably the suprascapular and axillary nerves.

Question 5263

Topic: 5. Sports Medicine

A 45-year-old man falls onto his outstretched hand and presents with anterior shoulder pain. He has increased passive external rotation compared to the contralateral side. The surgeon suspects an acute subscapularis tendon rupture. Which of the following physical examination tests is considered the most sensitive for detecting a partial tear of the upper subscapularis?

. Lift-off test
. Belly-press test
. Bear-hug test
. O'Brien test
. Neer impingement sign

Correct Answer & Explanation

. Bear-hug test


Explanation

The bear-hug test is highly sensitive for subscapularis tears, particularly isolating the upper portion of the subscapularis tendon. The lift-off test is very specific but requires sufficient internal rotation, which many patients cannot achieve.

Question 5264

Topic: Shoulder & Hip Sports

A 24-year-old rugby player presents with recurrent anterior shoulder instability. CT scan reveals 25% anterior glenoid bone loss and an engaging Hill-Sachs lesion. Which of the following procedures is most appropriate?

. Arthroscopic Bankart repair
. Arthroscopic Bankart repair with remplissage
. Latarjet procedure
. Open Bankart repair
. Putti-Platt procedure

Correct Answer & Explanation

. Latarjet procedure


Explanation

In a young collision athlete with recurrent instability, significant glenoid bone loss (>20-25%), and an off-track/engaging Hill-Sachs lesion, a bony augmentation procedure such as the Latarjet is indicated. Arthroscopic soft tissue repair has unacceptably high failure rates in this setting.

Question 5265

Topic: Shoulder & Hip Sports

A 28-year-old volleyball player presents with insidious onset of posterior shoulder pain and isolated weakness in external rotation. An MRI is obtained, demonstrating a paralabral cyst.

Based on the clinical presentation, where is the cyst most likely located and what labral pathology is associated with it?

. Suprascapular notch; superior labral tear
. Spinoglenoid notch; posterior labral tear
. Quadrilateral space; inferior labral tear
. Subcoracoid space; anterior labral tear
. Subacromial space; superior labral tear

Correct Answer & Explanation

. Spinoglenoid notch; posterior labral tear


Explanation

Isolated weakness of the infraspinatus (external rotation) with normal supraspinatus function (abduction) suggests compression of the suprascapular nerve at the spinoglenoid notch. Paralabral cysts in this location are strongly associated with posterior labral tears.

Question 5266

Topic: Shoulder & Hip Sports

A 55-year-old construction worker presents with insidious onset anterior shoulder pain, positive O'Brien's test, and MRI demonstrating a Type II SLAP tear. There is no significant rotator cuff tearing. What is the most reliable surgical intervention for this patient if conservative management fails?

. Arthroscopic SLAP repair
. Open SLAP repair
. Biceps tenodesis
. Coracoacromial ligament release
. Arthroscopic capsular shift

Correct Answer & Explanation

. Biceps tenodesis


Explanation

In older patients (typically >40-45 years), arthroscopic SLAP repair has higher failure rates, increased stiffness, and lower return to work rates compared to biceps tenodesis. Biceps tenodesis is the preferred surgical treatment for Type II SLAP tears in this demographic.

Question 5267

Topic: Shoulder & Hip Sports

A 23-year-old professional baseball pitcher presents with pain in the late cocking phase of throwing. MRI arthrogram reveals a partial articular-sided tear of the supraspinatus and fraying of the posterior superior labrum. What is the underlying pathophysiologic mechanism of this injury?

. Subacromial impingement against the coracoacromial arch
. Contact between the greater tuberosity and the posterosuperior glenoid
. Traction of the biceps anchor during follow-through
. Anterior subluxation of the humeral head due to a Bankart lesion
. Entrapment of the suprascapular nerve

Correct Answer & Explanation

. Contact between the greater tuberosity and the posterosuperior glenoid


Explanation

Internal impingement occurs in overhead athletes during the late cocking phase (abduction and maximal external rotation). It involves pathologic contact between the articular surface of the rotator cuff and the posterosuperior glenoid labrum.

Question 5268

Topic: Shoulder & Hip Sports

A 38-year-old laborer presents with an irreparable subscapularis tendon tear after a massive anterior shoulder injury. He has persistent pain and weakness in internal rotation. To restore internal rotation strength and dynamic anterior stability, a pectoralis major transfer is planned. To optimize the vector of pull, the transfer is typically routed:

. Over the conjoined tendon to the lesser tuberosity
. Under the conjoined tendon to the lesser tuberosity
. Over the conjoined tendon to the greater tuberosity
. Under the conjoined tendon to the greater tuberosity
. Directly to the subscapularis footprint without altering the conjoined tendon relationship

Correct Answer & Explanation

. Under the conjoined tendon to the lesser tuberosity


Explanation

For an irreparable subscapularis tear, a pectoralis major tendon transfer routed deep (under) to the conjoined tendon most closely replicates the anatomic force vector of the native subscapularis. Routing over the conjoined tendon has a less optimal biomechanical angle.

Question 5269

Topic: Shoulder & Hip Sports

A 22-year-old collegiate baseball pitcher presents with posterior shoulder pain during the late cocking phase of throwing. MRI arthrogram reveals a peel-back lesion of the superior labrum. Which physical exam finding is most closely associated with this specific pathology?

. Positive Speed test
. Positive O'Brien test
. Glenohumeral internal rotation deficit (GIRD)
. Positive belly-press test
. Positive Hornblower sign

Correct Answer & Explanation

. Glenohumeral internal rotation deficit (GIRD)


Explanation

Peel-back SLAP tears in overhead athletes are heavily associated with Glenohumeral Internal Rotation Deficit (GIRD). The repetitive throwing motion causes posteroinferior capsular contracture, shifting the glenohumeral contact point posterosuperiorly and increasing stress on the superior labrum.

Question 5270

Topic: Shoulder & Hip Sports

A 26-year-old male sustains an acute, traumatic anterior shoulder dislocation. After successful closed reduction in the emergency department, he notes persistent numbness over the lateral aspect of his shoulder. Which muscle's function is most likely to be impaired?

. Supraspinatus
. Infraspinatus
. Teres minor
. Teres major
. Subscapularis

Correct Answer & Explanation

. Teres minor


Explanation

Numbness over the lateral shoulder indicates an axillary nerve injury, the most common neurologic complication of an anterior shoulder dislocation. The axillary nerve innervates both the deltoid and the teres minor muscles.

Question 5271

Topic: Shoulder & Hip Sports

A 30-year-old male volleyball player presents with isolated weakness in external rotation of his dominant shoulder. Forward elevation and internal rotation strength are normal. MRI reveals a paralabral cyst. At what anatomical location is this cyst most likely compressing the affected nerve?

. Suprascapular notch
. Spinoglenoid notch
. Quadrilateral space
. Triangular interval
. Spiral groove

Correct Answer & Explanation

. Spinoglenoid notch


Explanation

Isolated infraspinatus weakness (external rotation) with normal supraspinatus function (forward elevation) indicates distal suprascapular nerve compression. This typically occurs at the spinoglenoid notch, often due to a paralabral cyst from a posterior labral tear.

Question 5272

Topic: Shoulder & Hip Sports

Latissimus dorsi tendon transfer is occasionally considered for patients with massive, irreparable posterosuperior rotator cuff tears. Which of the following is generally considered an absolute contraindication for this procedure?

. Age greater than 60 years
. Intact subscapularis tendon
. Subscapularis tear insufficiency
. Hamada Grade 1 radiographic changes
. Intact teres minor

Correct Answer & Explanation

. Intact subscapularis tendon


Explanation

Latissimus dorsi transfer requires an intact, functioning subscapularis to provide an anterior counterforce for glenohumeral stability. Subscapularis insufficiency, advanced glenohumeral arthritis, and deltoid paralysis are primary contraindications.

Question 5273

Topic: 5. Sports Medicine

Figure 51 demonstrates a physical exam finding in a 55-year-old male laborer complaining of acute, sharp anterior shoulder pain and bruising after lifting heavy equipment. A noticeable 'Popeye' deformity is present. He is highly active and reports severe persistent cramping in the arm. What is the most appropriate definitive management?

. Corticosteroid injection into the bicipital groove
. Nonoperative management with physical therapy
. Subpectoral biceps tenodesis
. Arthroscopic SLAP repair
. Coracoclavicular ligament reconstruction

Correct Answer & Explanation

. Subpectoral biceps tenodesis


Explanation

The clinical scenario and deformity describe a long head of the biceps tendon rupture. While nonoperative management is suitable for many, subpectoral biceps tenodesis is indicated for active laborers experiencing persistent cramping and fatigue.

Question 5274

Topic: Shoulder & Hip Sports

A 21-year-old collegiate linebacker undergoes arthroscopic stabilization for recurrent anterior shoulder instability. During diagnostic arthroscopy, the surgeon notes an avulsion of the anteroinferior capsulolabral complex from the glenoid rim. What is the classic eponym for this lesion?

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

Correct Answer & Explanation

. Bankart lesion


Explanation

A Bankart lesion is defined as the avulsion of the anteroinferior capsulolabral complex from the glenoid rim. It is the essential soft-tissue lesion seen in traumatic, unidirectional anterior shoulder instability.

Question 5275

Topic: 5. Sports Medicine

Which of the following bone graft substitutes possesses osteoconductive, osteoinductive, and osteogenic properties?

. Demineralized bone matrix (DBM)
. Cancellous autograft
. Calcium phosphate
. Cortical allograft
. Tricalcium phosphate

Correct Answer & Explanation

. Cancellous autograft


Explanation

Cancellous autograft provides scaffolding (osteoconductive), growth factors (osteoinductive), and live cells (osteogenic). DBM is primarily osteoconductive and osteoinductive but lacks live cells.

Question 5276

Topic: 5. Sports Medicine
A 28-year-old athlete undergoes surgical repair of an Achilles tendon rupture. During the remodeling phase of tendon healing, the biomechanical strength of the tendon significantly increases. This is primarily driven by the replacement of which collagen type with another?
. Type I replaced by Type II
. Type II replaced by Type I
. Type III replaced by Type I
. Type I replaced by Type III
. Type X replaced by Type I

Correct Answer & Explanation

. Type I replaced by Type III


Explanation

During the initial proliferative phase of tendon healing, fibroblasts lay down a disorganized, provisional matrix rich in Type III collagen. In the subsequent remodeling phase, this is gradually replaced by stronger, highly organized Type I collagen, thereby increasing the tendon's tensile strength.

Question 5277

Topic: Knee Sports

A 30-year-old patient presents with knee instability. The dial test demonstrates increased external rotation at 30 degrees of knee flexion compared to the contralateral side, but symmetric rotation at 90 degrees. Which structure(s) are isolatedly injured?

. Popliteofibular ligament and PCL
. Posterior cruciate ligament only
. Anterior cruciate ligament only
. LCL, popliteus tendon, and popliteofibular ligament
. Superficial and deep medial collateral ligaments

Correct Answer & Explanation

. LCL, popliteus tendon, and popliteofibular ligament


Explanation

Increased external rotation isolated to 30 degrees of flexion indicates an injury strictly to the posterolateral corner (PLC) structures (LCL, popliteus, popliteofibular ligament). If the test were positive at both 30 and 90 degrees, it would indicate a combined PLC and PCL injury.

Question 5278

Topic: Shoulder & Hip Sports

An MRI of the shoulder reveals a paralabral cyst compressing the suprascapular nerve strictly at the spinoglenoid notch. Which physical exam finding is most likely to be isolated in this patient?

. Weakness in forward elevation
. Weakness in external rotation with isolated atrophy of the infraspinatus
. Weakness in internal rotation with atrophy of the subscapularis
. Atrophy of both the supraspinatus and infraspinatus
. Loss of sensation over the lateral deltoid

Correct Answer & Explanation

. Weakness in external rotation with isolated atrophy of the infraspinatus


Explanation

The suprascapular nerve innervates the supraspinatus prior to passing through the spinoglenoid notch. Compression at the spinoglenoid notch isolatedly denervates the infraspinatus, causing weakness in external rotation.

Question 5279

Topic: 5. Sports Medicine

A 24-year-old athlete is evaluated for exertional compartment syndrome of the lower leg. Manometry of the deep posterior compartment is performed. Which of the following structures is NOT located within this specific compartment?

. Tibialis posterior
. Flexor hallucis longus
. Flexor digitorum longus
. Peroneus brevis
. Posterior tibial artery

Correct Answer & Explanation

. Peroneus brevis


Explanation

The peroneus brevis and peroneus longus muscles are located in the lateral compartment of the lower leg. The deep posterior compartment contains the tibialis posterior, flexor digitorum longus, flexor hallucis longus, and the posterior tibial neurovascular bundle.

Question 5280

Topic: Knee Sports

During a surgical reconstruction of the posterolateral corner of the knee, the surgeon isolates the fibular collateral ligament. This structure attaches to the fibular head in close proximity to which of the following tendons?

. Semimembranosus
. Popliteus
. Biceps femoris
. Iliotibial band
. Plantaris

Correct Answer & Explanation

. Biceps femoris


Explanation

The fibular collateral ligament (FCL) acts as the primary static stabilizer against varus stress. It inserts onto the lateral aspect of the fibular head, intimately associated with the biceps femoris tendon insertion, forming a conjoined tendon in some anatomical variants.