Surgical Anatomy & Approaches MCQs

During the anterior (volar) approach to the forearm for fixation of a midshaft radius fracture, the surgeon develops the proximal internervous plane. This plane is located between two muscles that are supplied by which respective nerves?

During an anterior intrapelvic approach (modified Stoppa) for an acetabular fracture, life-threatening hemorrhage occurs near the posterior aspect of the superior pubic ramus. This is most likely due to injury of the corona mortis, which is an anastomotic vessel connecting which two vascular systems?

A 35-year-old male sustains a posterior shoulder dislocation and subsequently develops numbness over the lateral aspect of his deltoid. The affected nerve passes through an anatomical space in the posterior shoulder. Which of the following structures forms the inferior border of this space?

An orthopedic surgeon performing an anterior (ilioinguinal) approach for an acetabular fracture encounters severe hemorrhage while dissecting superior to the superior pubic ramus. This bleeding most likely originates from an anomalous anastomosis between the external iliac system and which other vascular system?

An orthopedic surgeon utilizes the direct anterior (Smith-Petersen) approach for a total hip arthroplasty. The superficial internervous plane lies between the sartorius and the tensor fasciae latae. These muscles are innervated, respectively, by which of the following nerves?

A surgeon is performing an open reduction of a proximal humerus fracture via a deltopectoral approach. To mobilize the proximal fragment, they dissect inferiorly along the capsule. Which of the following structures exits the quadrangular space and is at greatest risk during an inferior capsular release?

During an anterior (Smith-Petersen) approach to the hip, an internervous plane is utilized to access the joint. Which of the following correctly describes the superficial internervous plane for this approach?

During an ilioinguinal approach to the acetabulum, the surgeon must identify and ligate the "corona mortis" to prevent massive, difficult-to-control hemorrhage. This structure is a vascular anastomosis between which two systems?

The volar (Henry) approach to the radius utilizes an internervous plane that changes from the proximal to the distal forearm. What is the correct distal internervous plane for this approach?

During a Smith-Petersen (anterior) approach to the hip, an internervous plane is utilized for the superficial dissection. Which of the following represents the correct internervous plane and their respective innervations?

During a posterior approach to the humeral shaft, the radial nerve is at greatest risk of iatrogenic injury as it crosses the posterior aspect of the humerus. On average, what is the distance from the point where the radial nerve pierces the lateral intermuscular septum to the lateral epicondyle?

During an ilioinguinal approach for an anterior column acetabular fracture, significant hemorrhage occurs near the superior pubic ramus. This bleeding is most likely from the 'corona mortis', which represents an anastomosis between which two vascular systems?

During the volar (Henry) approach to the proximal third of the radius, the internervous plane lies between the brachioradialis and the pronator teres. What is the respective nerve supply of these two muscles?

An orthopedic surgeon is performing an anterior intrapelvic (modified Stoppa) approach for an acetabular fracture. Brisk bleeding is encountered from an anastomotic vessel located on the posterior aspect of the superior pubic ramus. This vessel typically connects which two vascular systems?

In performing an anterior (Smith-Petersen) approach to the hip, the internervous plane between the sartorius and tensor fasciae latae is utilized. In the deep dissection, the rectus femoris must be identified. Its reflected head originates from which of the following structures?

A patient with Kniest Dysplasia is being evaluated. Beyond the spinal manifestations of platyspondyly and kyphoscoliosis, which extra-skeletal finding is most common?

During a massive femoral lengthening procedure, a patient develops paresthesias in the anterolateral thigh and knee, alongside isolated weakness in knee extension. Which nerve is most likely experiencing a stretch injury?

In the surgical treatment of neonatal septic arthritis of the hip, an anterior approach (Smith-Petersen) is often preferred for open arthrotomy and drainage. Which internervous plane is utilized in this surgical approach?

A 58-year-old male is undergoing a primary total hip arthroplasty via a direct anterior approach. During the superficial dissection, the surgeon develops the internervous plane and encounters a leash of vessels crossing the surgical field transversely, which requires ligation. These vessels primarily provide the blood supply to which of the following muscles?

A surgeon is performing a primary total hip arthroplasty via the direct anterior approach. During the deep dissection, an internervous plane is utilized to expose the hip capsule. Which of the following accurately describes the innervation of the muscles defining this deep plane?