Surgical Anatomy & Approaches MCQs

During a modified Stoppa approach for a pelvic ring fracture, the surgeon elevates the peritoneum from the superior pubic ramus and quadrilateral plate. A significant vascular structure traversing vertically over the superior pubic ramus is encountered and must be ligated to prevent catastrophic hemorrhage. This structure is an anastomosis between which two vascular systems?

A 40-year-old male sustains a midshaft humerus fracture requiring plate fixation. A posterior approach to the humerus is chosen. To safely identify and protect the radial nerve, the surgeon must know its reliable anatomical landmarks. The radial nerve typically crosses the posterior aspect of the humerus at approximately what distance proximal to the lateral and medial epicondyles respectively?

Which of the following surgical approaches to the hip is accurately matched with its proper internervous plane?

A surgeon is performing an open reduction and internal fixation of a distal tibia (pilon) fracture via a standard anterolateral approach. Which internervous plane is developed, and what nerve is directly at risk during the distal extent of this exposure?

During a posterolateral approach to the tibia to bone graft an ununited fracture, an internervous plane is developed. Which of the following accurately describes the muscle interval and nerve supply for this approach?

The classic posterior approach to the shoulder joint requires developing an internervous plane between the infraspinatus and teres minor. What are the respective nerve supplies to these muscles?

When exposing the entire length of the radius via the volar (Henry) approach, the supinator must be detached to expose the proximal third of the radius. To safely detach the supinator without injuring the posterior interosseous nerve, how should the forearm be positioned during the detachment?

An anterolateral approach to the femur is performed for the treatment of a proximal third shaft fracture. The surgeon develops the plane between the rectus femoris and the vastus lateralis. Which structure crosses this surgical interval proximally and must be protected or ligated?

A surgeon is performing an anterolateral approach (Watson-Jones) to the hip for a femoral neck fracture.

What is the internervous plane for the superficial dissection of this approach?

During a posterior approach to the shoulder, the internervous plane is developed between the infraspinatus and teres minor. Which of the following correctly pairs these muscles with their respective innervations?

A surgeon utilizes the volar (Henry) approach to the forearm to plate a middle-third radial shaft fracture.

During the deep dissection in the proximal third of the forearm, the supinator muscle must be elevated from the radius. To minimize risk to the posterior interosseous nerve (PIN), how should the supinator be managed?

When performing an ilioinguinal approach for an acetabular fracture, the middle window is defined by which of the following boundaries?

In the modified Stoppa approach for anterior intrapelvic access, which of the following structures must often be identified and ligated on the superior pubic ramus to prevent catastrophic bleeding?

During a deltopectoral approach to the shoulder, the conjoined tendon is identified attaching to the coracoid process.

Which of the following structures makes up the conjoined tendon, and what nerve is most at risk if retractors are placed aggressively medial to it?

The posterolateral approach to the distal tibia (often used for posterior malleolus fractures) exploits the internervous plane between which two muscle groups?

During a Smith-Petersen (anterior) approach to the hip,

the deep dissection involves working between the rectus femoris and the gluteus medius/minimus. Which blood vessels typically cross this field and require ligation to mobilize the rectus femoris safely?

A posterior approach to the humerus is selected for open reduction and internal fixation of a distal third humerus fracture. The radial nerve is identified in the spiral groove. Approximately how far proximal to the lateral epicondyle does the radial nerve piece the lateral intermuscular septum to pass from the posterior to the anterior compartment?

In the Kaplan approach (anterolateral) to the proximal radius,

the internervous plane is developed between the extensor digitorum communis (EDC) and the extensor carpi radialis brevis (ECRB). Why is this approach considered to have a higher risk of neurologic injury compared to the Kocher approach?

An anterolateral (Watson-Jones) approach is utilized. The deep dissection requires identification of the capsule. During this deep dissection, which muscle must frequently be detached from the anterior aspect of the greater trochanter to optimize exposure of the femoral neck?

A surgeon performs the Ludloff (medial) approach to the hip for an open reduction of a pediatric developmental dysplasia of the hip.

What is the deep internervous plane utilized in this approach?