What is the insertion point of the piriformis muscle?

The correct insertion point of the piriformis muscle is the greater trochanter. This structure is a bony prominence located on the femur and serves as an important attachment site for several muscles of the hip, facilitating movements such as abduction and external rotation of the hip joint. The piriformis muscle, which originates from the anterior aspect of the sacrum, travels laterally and inserts onto the greater trochanter.

This anatomical relationship is vital for understanding the mechanics of movement and the role of the piriformis in providing stability and mobility in the hip region. The other options do not relate to the insertion of the piriformis but rather to different muscles or structures within the hip. For example, the fovea of the femur is where the ligamentum teres attaches, while the intertrochanteric line serves as an insertion point for several other muscles and surrounds the lesser and greater trochanters. Understanding these details helps clarify muscle functions and the importance of precise anatomical knowledge in sports massage and rehabilitation contexts.