5. Sports Medicine MCQs

A 31-year-old elite volleyball attacker presents with isolated weakness in shoulder external rotation. Abduction strength is normal, and there is visible atrophy of the infraspinatus without supraspinatus involvement. An MRI reveals a paralabral cyst compressing a nerve. At which precise anatomical location is the compression occurring?

During a posterior approach to the shoulder, the quadrilateral space is identified to locate the axillary nerve and posterior circumflex humeral artery. Which muscle serves as the inferior border of this anatomical space?

The surgical safe zone for the placement of a lateral portal in hip arthroscopy or pins in the proximal femur is determined by the course of the superior gluteal nerve. On average, how far proximal to the tip of the greater trochanter does the superior gluteal nerve course?

In a massive rotator cuff tear involving the subscapularis and supraspinatus, the biceps tendon is noted to be unstable. Which anatomical structures form the medial and lateral borders of the rotator interval that typically stabilize the long head of the biceps?

A 28-year-old overhead athlete presents with poorly localized posterior shoulder pain and paresthesias over the lateral deltoid. MRI shows isolated atrophy of the teres minor muscle. Which of the following anatomic boundaries define the space where the affected nerve is most likely compressed?

A 30-year-old volleyball player complains of vague posterior shoulder pain and isolated weakness in external rotation. Examination reveals profound atrophy of the infraspinatus but normal bulk and strength of the supraspinatus. Entrapment of the involved nerve is most likely caused by a paralabral cyst located at which of the following anatomic structures?

During knee arthroscopy, a peripheral, longitudinal tear of the medial meniscus is identified in the "red-red" zone. Which of the following arteries provides the primary blood supply to this peripheral portion of the meniscus?

During a SLAP (Superior Labrum Anterior to Posterior) repair, the surgeon focuses on the attachment of the long head of the biceps tendon. The long head of the biceps tendon originates from the supraglenoid tubercle and which of the following structures?

On an MRI of the knee, an intact meniscofemoral ligament is identified. The ligament of Wrisberg is characterized by its anatomic relationship to the posterior cruciate ligament (PCL). Which description is correct?

Reconstruction of the medial patellofemoral ligament (MPFL) requires accurate femoral tunnel placement. Where is the anatomic origin of the MPFL on the medial femur?

During a physical examination, the knee demonstrates increased varus laxity at 30 degrees of flexion but is stable in full extension. Which structure provides the primary restraint to varus stress at 30 degrees of knee flexion?

The anterior cruciate ligament (ACL) is composed of two primary bundles that exhibit unique tension patterns throughout the arc of knee motion. Which of the following statements correctly describes the biomechanics of these bundles?

Injury to the posterolateral corner of the knee can result in significant rotatory and varus instability. Which of the following structures is the primary static stabilizer against external tibial rotation at 30 degrees of knee flexion?

A 45-year-old overhead athlete presents with isolated weakness in external rotation of the shoulder. Electromyography reveals denervation of the infraspinatus with a normal supraspinatus. Where is the most likely anatomic site of nerve entrapment?

The medial meniscus of the knee is injured more frequently than the lateral meniscus, largely due to its restricted mobility. Which anatomic attachment primarily limits the translation of the medial meniscus during knee motion?

A 25-year-old male sustains a direct blow to the anteromedial aspect of his knee, resulting in a posterolateral corner (PLC) injury. During surgical reconstruction, the surgeon must identify the femoral attachments of the LCL and the popliteus tendon. What is the correct anatomical relationship of the popliteus tendon origin relative to the LCL femoral footprint?

During arthroscopy for a suspected meniscus tear, the surgeon evaluates the peripheral blood supply to determine the healing potential of a repair. What is the primary arterial supply to the peripheral aspects of the medial and lateral menisci?

During placement of a retrograde intramedullary nail for a femur fracture, the starting point is made in the intercondylar notch. The surgeon must be careful to avoid injuring which of the following ligamentous structures that attaches to the medial aspect of the lateral femoral condyle?

The upper and lower subscapular nerves provide critical motor innervation to the subscapularis muscle. These nerves originate from which specific portion of the brachial plexus?