A 35-year-old woman is evaluated in the office due to left buttock pain of 6 months duration. She has no history of previous trauma. She has no previous medical or surgical history. Physical examination shows pain upon adduction of the flexed thigh with resistance and internal rotation of the extended thigh against resistance. The evaluation shows entrapment of the sciatic nerve in the greater sciatic foramen. The greater sciatic foramen is occupied mostly by which of the following structures?

Question

Quizplus · Accepted Answer

Eductional Objective: The greater sciatic foramen is occupied mostly by the piriformis muscle and is involved in external rotation. Piriformis syndrome may result from a muscle injury or hypertrophy that compresses the sciatic nerve.

A 35-Year-Old Woman Is Evaluated in the Office Due to Left