Surgical Anatomy & Approaches MCQs

During an ilioinguinal approach for an acetabular fracture, the surgeon must identify and ligate the corona mortis to prevent massive hemorrhage. This structure typically represents an anastomosis between the obturator vessels and which of the following systems?

A surgeon utilizes the volar (Henry) approach to expose the proximal third of the radius. To achieve this, the supinator muscle must be mobilized. Which nerve is at risk during this step, and what is its relationship to the muscle?

During an anterior (Smith-Petersen) approach to the hip, the superficial internervous plane utilized is between the sartorius and the tensor fasciae latae. What is the innervation of these two muscles, respectively?

During the ilioinguinal approach to the acetabulum, severe hemorrhage can occur if the corona mortis is inadvertently injured. The corona mortis is an anastomotic vascular connection between which two systems?

A 40-year-old overhead athlete presents with vague posterior shoulder pain and paresthesias over the lateral deltoid. MRI demonstrates a paralabral cyst compressing the quadrilateral space. Which nerve and artery pass through this anatomical space?

A surgeon uses a two-incision technique for a distal biceps tendon repair. During the posterolateral approach to secure the tendon to the radial tuberosity, which nerve is at greatest risk if the arm is not maintained in maximal pronation?

When utilizing an ilioinguinal approach for an anterior column acetabular fracture, the surgeon must carefully expose and protect the corona mortis. This variable vascular anastomosis most commonly connects the obturator vessels with which of the following?

A patient undergoes plating for a midshaft humerus fracture via an anterolateral approach. At approximately what distance proximal to the lateral epicondyle does the radial nerve pierce the lateral intermuscular septum to transition from the posterior to the anterior compartment?

During a Smith-Petersen (anterior) approach to the hip for a core decompression, the surgeon develops both superficial and deep internervous planes. The deep internervous plane is located between which two muscles?

A surgeon utilizes the volar (Henry) approach to the forearm to perform open reduction and internal fixation of a proximal radius fracture. What muscle must be supinated and elevated off its ulnar origin to expose the proximal radius safely while protecting the posterior interosseous nerve (PIN)?

During an anterior ilioinguinal approach to the acetabulum, severe hemorrhage is encountered near the superior pubic ramus. This bleeding is most likely from an anastomotic vessel connecting which two vascular systems?

When performing a lateral deltoid-splitting approach to the proximal humerus, the axillary nerve is at risk. On average, how far distal to the lateral acromial edge does the main trunk of the axillary nerve cross the humerus?

During a volar (Henry) approach to the proximal radius, supination of the forearm protects the posterior interosseous nerve (PIN). Supination achieves this by shifting the PIN in which direction relative to the surgical field?

A surgeon is performing an anterior cervical corpectomy and fusion (ACCF). During lateral decompression, the vertebral artery is at risk. At which cervical level does the vertebral artery typically enter the transverse foramen?

During an ilioinguinal approach to the acetabulum, significant hemorrhage is encountered behind the superior pubic ramus near the symphysis. This bleeding is most likely originating from the corona mortis, which is an anastomotic connection between the obturator vessels and which of the following?

When performing an anterior (Smith-Petersen) approach to the hip, the superficial internervous plane is utilized. Which of the following accurately describes the innervation of the muscles defining this plane?

During an anterolateral approach to the distal humerus, the surgeon develops an internervous plane to access the humeral shaft. Which of the following describes the innervation of the muscles defining this plane?

During an ilioinguinal approach for an acetabular fracture, significant hemorrhage occurs while dissecting over the superior pubic ramus. This bleeding is most likely originating from an anastomosis between the obturator vessels and which of the following?

A 25-year-old baseball pitcher presents with vague posterior shoulder pain and deltoid weakness. Examination shows atrophy of the teres minor. Which anatomical boundaries define the space where the affected neurovascular bundle is likely compressed?

A 35-year-old man sustains a midshaft humerus fracture. During open reduction and internal fixation via an anterolateral approach, the surgeon must identify and protect the radial nerve. At approximately what distance proximal to the lateral epicondyle does the radial nerve typically pierce the lateral intermuscular septum?