Surgical Anatomy & Approaches MCQs

A 25-year-old skier crashes and presents to the emergency department with severe groin pain. On examination, his right hip is held in a position of marked flexion, abduction, and external rotation. Radiographs confirm an anterior hip dislocation. Which anatomical structure is most at risk of injury in this specific dislocation pattern?

When performing a total hip arthroplasty via the direct anterior approach, the internervous plane utilized is between muscles innervated by which of the following nerves?

During a direct anterior approach for total hip arthroplasty, the internervous plane is developed between muscles supplied by which of the following nerves?

During a direct anterior approach to the hip for total hip arthroplasty, the ascending branch of the lateral femoral circumflex artery is typically ligated. In what intermuscular interval is this approach performed?

Which of the following nerves is at greatest risk of injury during a direct lateral (Hardinge) approach to the hip?

During a direct anterior approach for a total hip arthroplasty, the surgeon dissects between the tensor fasciae latae and the sartorius. Which of the following nerves is at greatest risk of injury during this superficial dissection?

In a direct anterior approach for total hip arthroplasty, the superficial internervous plane is utilized. Which two nerves supply the muscles defining this plane?

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

During a direct anterior approach for total hip arthroplasty, the surgeon dissects between the sartorius and the tensor fasciae latae. Which of the following neurologic structures is at highest risk of iatrogenic injury during the exposure of this specific internervous interval?

Following a primary THA using a posterior approach, the patient demonstrates a foot drop and inability to extend the great toe. Sensation is decreased over the dorsum of the foot. Which specific neural structure was most likely injured?

When performing an anterior approach to the hip (Smith-Petersen), the internervous plane utilized is between muscles innervated by which two nerves?

During a total hip arthroplasty utilizing the direct anterior (Smith-Petersen) approach, which of the following internervous planes is utilized superficially?

A surgeon utilizes the direct anterior approach (Smith-Petersen) for a primary total hip arthroplasty. Which of the following is an expected potential neurologic complication specific to this surgical approach?

During open reduction and internal fixation of a proximal humerus fracture via an extended deltopectoral approach, which nerve is at greatest risk of iatrogenic injury when placing retractors beneath the deltoid or splitting its distal fibers?

A 42-year-old man undergoes arthroscopic rotator cuff repair. During the procedure, the surgeon decides to place an anchor in the posterosuperior aspect of the greater tuberosity. What structure is most at risk if the anchor is misplaced too medially near the glenoid articular margin?

A 65-year-old man falls on his outstretched dominant arm. He has a 3-part proximal humerus fracture with varus alignment. He undergoes ORIF with a locking plate. Postoperatively, he is noted to have inability to actively extend his wrist and fingers. What is the most likely cause?

A 33-year-old man presents with vague posterior shoulder pain and numbness over the lateral deltoid after a blunt trauma to the posterior shoulder. An MRI reveals an isolated fluid collection in the quadrilateral space. Which nerve is most likely compressed in this space?

A 40-year-old man presents with vague posterior shoulder pain and isolated atrophy of the teres minor on physical examination. MRI confirms fatty infiltration isolated to the teres minor. Compression of which nerve in the quadrilateral space is the most likely cause?

During a Latarjet procedure, careful retraction is required when exposing the anterior glenoid neck to avoid irogenic nerve injury. Which nerve is most at risk when retracting the conjoint tendon medially?

During a Latarjet procedure for recurrent anterior shoulder instability, the coracoid process is transferred to the anterior glenoid. Which nerve is most at risk during the distal exposure and mobilization of the conjoined tendon?