Anatomy Lower Limb (Demo)

A 30-year-old runner presents with pain and swelling around the lateral aspect of the ankle after an inversion injury. The clinician notes tenderness near the lateral malleolus. Which of the following structures does not pass anterior to the lateral malleolus?

A 34-year-old man undergoes inguinal hernia repair. Postoperatively, he reports numbness over the anterior aspect of the scrotum. Which of the following nerves is the primary source of innervation to the anterior scrotal skin?

A 24-year-old male medical student presents to the clinic with pain and swelling on the inner aspect of his right knee for the past three weeks. He is an amateur football player and reports that his symptoms started after he attempted a sudden side-step movement during a game. Since then, he has experienced discomfort when walking, particularly while climbing stairs or getting out of a chair. On physical examination, there is mild tenderness over the medial aspect of the proximal tibia. Resisted knee flexion elicits pain, and there is no evidence of ligamentous instability. The rest of the musculoskeletal examination is unremarkable.
Which of the following statements regarding the affected muscle is correct?

A 48 year old motor cyclist sustains a complex lower limb fracture in a motor accident. For a time the popliteal artery is occluded and eventually repaired. Subsequently he develops a compartment syndrome and the anterior and superficial posterior compartments of the lower leg are decompressed. Unfortunately, the operating surgeon neglects to decompress the deep posterior compartment. Which of the following muscles is least likely to be affected as a result?

A 28-year-old athlete presents with severe pain and swelling in the lower leg following intense physical activity. Examination reveals signs consistent with compartment syndrome. During a fasciotomy, the surgeon identifies multiple compartments in the lower leg. How many compartments are there in the lower leg?