Surgical Anatomy & Approaches MCQs

During the anterior (ilioinguinal) approach for open reduction and internal fixation of an unstable pelvic ring injury, life-threatening hemorrhage is encountered just superior to the superior pubic ramus. The source is identified as the 'corona mortis'. This vascular structure represents an anatomic anastomosis between which of the following vascular systems?

During the ilioinguinal approach to the acetabulum, the 'corona mortis' is frequently encountered and must be ligated. This vascular structure represents an anastomosis between which two vascular systems?

During an ilioinguinal approach for an anterior column acetabular fracture, the surgeon must be cautious to identify and ligate the 'corona mortis' to prevent life-threatening hemorrhage. This structure typically represents an anastomosis between which two vascular systems?

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

During an ilioinguinal approach for internal fixation of an anterior column acetabular fracture, significant arterial bleeding is suddenly encountered on the posterior aspect of the superior pubic ramus near the symphysis. This vessel represents an anastomosis between which two vascular systems?

During an extensile ilioinguinal approach for a complex acetabular fracture, massive hemorrhage occurs while dissecting over the superior pubic ramus. This bleeding is most likely originating from the 'Corona Mortis'. This structure is classically an anastomosis between which two vascular systems?

During an anterior (ilioinguinal) approach for fixing a right anterior column acetabular fracture, significant hemorrhage occurs while dissecting near the superior pubic ramus. Which vascular structures are most likely involved in this 'corona mortis' anastomosis?

Which internervous plane is utilized superficially during the direct anterior (Smith-Petersen) approach to the hip?

During the anterior approach to the pelvis for acetabular fracture fixation, significant hemorrhage can occur due to an anastomotic vessel known as the 'corona mortis'. This structure typically represents a vascular communication between which two systems?

A 55-year-old woman requires open reduction and internal fixation of a displaced volar Barton fracture. The surgeon elects to use the standard volar Henry approach to the distal radius. Which of the following anatomical intervals is utilized during the superficial dissection of this approach?

During the anterior approach to the pelvis (ilioinguinal approach) for fixation of an acetabular fracture, significant hemorrhage occurs near the superior pubic ramus. This is most likely due to injury of an anastomotic vessel connecting which two arterial systems?

During anterior pelvic ring surgery via a Pfannenstiel approach, significant bleeding is encountered posterior to the superior pubic ramus. Which two vessels form the most common anastomosis responsible for this bleeding (Corona Mortis)?

During the ilioinguinal approach for an anterior column acetabulum fracture, significant hemorrhage occurs approximately 5 cm lateral to the pubic symphysis, directly on the posterior aspect of the superior pubic ramus. Which vascular anastomosis has most likely been injured?

In the setting of an irreversible high radial nerve palsy, tendon transfers are utilized to restore wrist and digit extension. In the classic Boyes transfer to restore finger extension, which muscle is transferred to the extensor digitorum communis (EDC)?

During an anterolateral (deltoid-splitting) approach for the open reduction and internal fixation of a proximal humerus fracture, which neurovascular structure is at highest risk if the dissection extends more than 5 cm distal to the lateral edge of the acromion?

The direct anterior approach to the hip (Smith-Petersen) exploits a true internervous and intermuscular plane. During the deep dissection, retractors are placed around the femoral neck. To minimize the risk of denervating the tensor fasciae latae (TFL), the surgeon must be careful to protect its nerve supply. Which nerve supplies the TFL, and where does it typically course in relation to this surgical approach?

A 30-year-old male sustains a high radial nerve palsy following a mid-shaft humerus fracture. After 9 months with no electromyographic evidence of recovery, tendon transfers are planned. Using the classic Brand transfer for radial nerve palsy, which of the following tendon transfers is primarily used to restore thumb extension?

Which of the following accurately describes the 'corona mortis' anastomosis, a critical vascular structure that may be encountered and injured during the ilioinguinal approach to the acetabulum?

A surgeon is performing a Direct Anterior Approach (Smith-Petersen) to the hip for a primary total hip arthroplasty. What muscles define the deep internervous plane in this approach?