The piriformis, gemelli superior, and obturator internus are part of which muscle group?

The piriformis, gemelli superior, and obturator internus are classified as part of the lateral rotator muscle group of the hip. These muscles are primarily responsible for the external rotation of the femur at the hip joint, which is crucial for various movements, such as walking, running, and maintaining stability during activities that involve rotation of the lower body.

The piriformis, in particular, not only facilitates lateral rotation but also assists in hip abduction, especially when the hip is flexed. The gemelli superior and inferior, along with the obturator internus, function as synergists to enhance the effectiveness of this external rotation. This specific grouping of muscles plays a vital role in the control of hip mobility and contributes to the overall mechanics of movement in the lower limb.