1. General Principles & Basic Science MCQs

A patient presents with deep gluteal pain and posterior thigh paresthesias. An anatomical variation in the relationship between the sciatic nerve and the piriformis muscle is suspected. In the most common anatomical configuration, how does the sciatic nerve exit the pelvis?

During a Smith-Petersen anterior approach to the hip, the superficial internervous plane is utilized to access the joint safely. This plane is defined by muscles innervated by which of the following nerve pairs?

A patient presents with inability to actively extend the fingers at the metacarpophalangeal joints following a proximal forearm fracture, though wrist extension is preserved but deviates radially. Which of the following muscles is typically spared in this specific nerve compression syndrome?

In a Latarjet procedure for recurrent anterior shoulder instability, the conjoint tendon is retracted medially. Excessive medial retraction places which of the following nerves at highest risk as it enters the deep surface of the coracobrachialis?

During dissection for a midfoot reconstruction, the surgeon identifies the Master Knot of Henry. Which of the following best describes the anatomic relationship of the tendons at this location?

During the anterior (Henry) approach to the forearm, the surgeon must exploit a specific internervous plane to safely expose the radius. Which of the following correctly describes this proximal internervous plane?

The anterior (Smith-Petersen) approach to the hip provides excellent exposure for pelvic osteotomies and total hip arthroplasty. The superficial internervous plane for this approach utilizes which two muscles?

A posterior approach to the shoulder may place the axillary nerve at risk as it exits the quadrangular space. Which of the following structures forms the superior border of the quadrangular space?

During a posterolateral approach to the distal humerus, the radial nerve must be identified and protected. At approximately what distance proximal to the lateral epicondyle does the radial nerve pierce the lateral intermuscular septum?

The posterolateral (Kocher) approach to the elbow is frequently used for radial head fractures. This approach exploits an internervous plane between which two muscles?

The pes anserinus is frequently utilized as a harvest site for autograft in anterior cruciate ligament reconstruction. From anterior to posterior, what is the anatomical arrangement of these tendinous insertions on the proximal medial tibia?

During a radical axillary dissection, a nerve passing posterior to the axillary artery and innervating the latissimus dorsi is inadvertently injured. Which of the following describes the origin of this nerve?

During an ilioinguinal approach to the acetabulum, the surgeon must ligate the corona mortis to prevent massive hemorrhage. This structure is an anastomosis between which two vascular systems?

When performing a deltoid-splitting surgical approach to the shoulder, the axillary nerve is typically found at what approximate distance distal to the lateral edge of the acromion?

During a volar (Henry) approach to the proximal radius, how should the forearm be positioned to best protect the posterior interosseous nerve (PIN)?

The "corona mortis" is a significant anatomic structure encountered during the ilioinguinal approach to the acetabulum. It represents a vascular anastomosis between which two systems?

The short head of the biceps femoris muscle plays a unique anatomical role in the posterior compartment of the thigh. It receives its motor innervation from which of the following nerves?

During a deltopectoral approach for shoulder arthroplasty, the conjoined tendon is retracted medially. The nerve that pierces the coracobrachialis muscle typically enters it at what distance distal to the coracoid process?

During a direct lateral (Hardinge) approach to the hip, proximal extension of the gluteus medius split is typically limited to 3-5 cm superior to the greater trochanter to prevent injury to which nerve?

An orthopedic surgeon is performing an anterior ilioinguinal approach for an acetabular fracture. Severe hemorrhage is encountered near the superior pubic ramus. This bleeding is most likely from an anastomotic vessel connecting which two arterial systems?