Surgical Anatomy & Approaches MCQs

When utilizing the ilioinguinal approach for an anterior acetabular fracture, three 'windows' are developed. The middle window provides access to the pelvic brim. What structures define the medial and lateral borders of this middle window?

A surgeon is performing a Kocher-Langenbeck approach for a posterior wall acetabular fracture. Which combination of intraoperative limb positioning is most effective for protecting the sciatic nerve from stretch injury during retraction?

A 25-year-old unrestrained driver sustains a dashboard injury during a collision. He presents with his right hip flexed, adducted, and internally rotated. Neurological examination reveals weak ankle dorsiflexion and decreased sensation over the dorsal foot. Which nerve division is most likely injured?

During an anterior intrapelvic (modified Stoppa) approach to the acetabulum, the surgeon must identify and ligate the 'corona mortis'. This structure represents an anastomosis between which two vascular systems?

A surgeon utilizes the anterior (Smith-Petersen) approach for an open reduction of a developmental dysplasia of the hip. What is the superficial internervous plane utilized in this approach?

During an ilioinguinal approach for an anterior column acetabular fracture, the surgeon must mobilize contents within three distinct surgical windows. Which of the following structures is primarily isolated and protected in the middle window?

During an intrapelvic (modified Stoppa) approach for acetabular fracture fixation, significant hemorrhage is encountered while dissecting over the superior pubic ramus. This bleeding is most likely originating from an anastomosis (corona mortis) between which two vascular systems?

A 35-year-old man is brought to the emergency department after a high-speed motor vehicle collision. He has a shortened, internally rotated, and adducted right lower extremity. Following closed reduction of the hip, he is noted to have a foot drop and inability to extend his great toe. Which specific nerve division is most likely injured?

During an anterior (Smith-Petersen) approach to the hip, the superficial internervous plane lies between which two muscles?

During an ilioinguinal approach to the acetabulum, severe bleeding occurs as the surgeon dissects near the superior pubic ramus. This is most likely due to an injury to an anastomotic vessel connecting the obturator system and the:

A surgeon is performing a direct anterior (Smith-Petersen) approach to the hip for a total hip arthroplasty. The superficial surgical dissection utilizes an internervous plane between two muscles. Which of the following defines this interval?

During a primary total hip arthroplasty for a patient with bilateral Crowe type IV developmental dysplasia of the hip, the surgeon plans to restore the hip center of rotation to the true anatomic acetabulum. What intraoperative step is frequently required to minimize the risk of postoperative sciatic nerve palsy?

The direct anterior approach (Smith-Petersen) to the hip is favored by some surgeons due to its true internervous plane. Which two nerves supply the muscles that form the boundaries of this superficial surgical interval?

A 35-year-old man sustains a transverse acetabular fracture with predominant displacement of the posterior column following a motor vehicle collision. Which surgical approach is most appropriate for direct visualization and reduction of the primary displacement?

During a direct anterior approach (Smith-Petersen) to the hip, an internervous plane is utilized. The superficial interval is developed between which of the following two muscles?

During an anterior (Smith-Petersen) approach to the hip for a periacetabular osteotomy, the surgeon develops the superficial internervous plane. Which of the following represents the correct muscles and their respective innervations for this interval?

During an ilioinguinal approach for an anterior column acetabular fracture, significant arterial bleeding is encountered near the superior pubic ramus. This bleeding is most likely from the 'corona mortis', which is an anastomosis between the obturator vessels and which of the following?

The direct anterior approach (DAA) to the hip is an internervous plane. Which of the following best describes the superficial neural interval used in this approach?

Which of the following ligaments of the hip joint is the strongest and serves as the primary static restraint to hip extension?

A 25-year-old male sustains a posterior wall acetabular fracture with a posterior hip dislocation. Post-reduction, he undergoes open reduction and internal fixation via a Kocher-Langenbeck approach. Postoperatively, he is noted to have an inability to extend his great toe and decreased sensation in the first dorsal web space. Which specific neural element was most likely injured?