The piriformis inserts at which bony landmark?

The piriformis inserts at which bony landmark?

• A. Greater Trochanter
• B. Lesser Trochanter
• C. Head of Femur
• D. Intertrochanteric Line

Answer: (A)

The question checks where the piriformis attaches to the femur. The piriformis runs from the anterior surface of the sacrum and inserts on the greater trochanter of the femur, specifically the upper part. This site places it among the external rotators of the hip and helps stabilize the joint. The lesser trochanter is where the iliopsoas inserts; the head of the femur is the ball of the hip joint; the intertrochanteric line is a bony ridge between the trochanters—not a muscle insertion for the piriformis.

The question checks where the piriformis attaches to the femur. The piriformis runs from the anterior surface of the sacrum and inserts on the greater trochanter of the femur, specifically the upper part. This site places it among the external rotators of the hip and helps stabilize the joint. The lesser trochanter is where the iliopsoas inserts; the head of the femur is the ball of the hip joint; the intertrochanteric line is a bony ridge between the trochanters—not a muscle insertion for the piriformis.