Surgical Anatomy & Approaches MCQs

A surgeon performs a primary total hip arthroplasty using the direct anterior (Smith-Petersen) approach. Which of the following represents the correct superficial internervous plane utilized in this surgical approach?

A surgeon performs a THA using the direct anterior approach (DAA). This approach exploits a true internervous plane between which two muscles?

During a direct anterior (Smith-Petersen) approach to the hip for a primary total hip arthroplasty, the superficial surgical dissection passes between which of the following internervous muscle intervals?

Following a total hip arthroplasty via a posterior approach, a patient exhibits a foot drop and inability to extend the great toe, but plantar flexion and foot inversion remain intact. Which specific nerve division is most likely injured?

When performing a primary total hip arthroplasty via the direct anterior (Smith-Petersen) approach, the superficial internervous plane lies between muscles supplied by which of the following nerves?

A surgeon utilizing the direct anterior (Smith-Petersen) approach for total hip arthroplasty enters the hip joint through a specific internervous plane superficially. This plane lies between which two muscles?

During a direct anterior approach for a total hip arthroplasty, the patient sustains a nerve injury resulting in localized numbness over the anterolateral aspect of the thigh. Which nerve was most likely injured?

During a direct anterior approach for total hip arthroplasty, the surgeon develops the superficial surgical interval. Between which two nerve territories does this true internervous plane lie?

When utilizing the direct anterior approach for total hip arthroplasty, the internervous plane is established between muscles supplied by which of the following pairs of nerves?

During a direct anterior approach for a total hip arthroplasty, the surgeon develops the superficial internervous plane. Which of the following nerves innervates the muscle that forms the medial boundary of this surgical interval?

During a direct anterior approach for a total hip arthroplasty, the surgeon utilizes the internervous plane between which of the following muscles?

The posterior interosseous nerve (PIN) enters the posterior compartment of the forearm by passing between the two heads of which muscle?

A 16-year-old male undergoes a deltopectoral approach for a proximal humerus fracture. Aggressive medial retraction of the conjoined tendon places which of the following nerves at highest risk of injury?

The corona mortis, which is at risk of iatrogenic injury during an ilioinguinal approach to the acetabulum, is typically an anastomotic connection between the obturator vessels and which of the following?

A 20-year-old woman sustained the closed injury shown in Figures 49a and 49b in a motor vehicle accident. Examination reveals that this is an isolated injury; however, she has a complete radial nerve palsy. Management should consist of

A 45-year-old man requires ORIF of a displaced posterior wall acetabular fracture via a Kocher-Langenbeck approach. To minimize iatrogenic injury to the sciatic nerve during retraction, how should the ipsilateral lower extremity be positioned intraoperatively?

During an ilioinguinal approach for the fixation of an anterior column acetabular fracture, the surgeon operates in the middle window. Which of the following structures defines the medial border of this surgical window?

During an ilioinguinal approach for an anterior column acetabular fracture, brisk arterial bleeding is encountered near the superior pubic ramus approximately 5 cm from the pubic symphysis. This bleeding is most likely arising from an anastomosis between which of the following vessel pairs?

A 32-year-old man is involved in a high-speed motor vehicle collision and sustains a displaced posterior wall acetabular fracture with a posterior hip dislocation.

Following emergent closed reduction of the hip, CT imaging confirms a large, single-piece posterior wall fragment. Which of the following surgical approaches is most appropriate for definitive fixation?

When utilizing the ilioinguinal approach for an anterior column acetabular fracture, the surgeon must identify and ligate the 'corona mortis'. This structure represents an anastomosis between the obturator vessels and the: