Which of the following ligaments is responsible for resisting excessive external rotation of the hip?

The ischiofemoral ligament is indeed responsible for resisting excessive external rotation of the hip. It is located on the posterior aspect of the hip joint and plays a crucial role in stabilizing the joint during movement. This ligament, along with the other ligaments of the hip, contributes to the overall stability of the hip joint by providing resistance against excessive rotational forces.

The ischiofemoral ligament’s fibers run in a spiral fashion, which helps to tighten during hip extension and externally rotating movements, thus providing support and injury prevention. This functionality is particularly important during activities that involve quick changes in direction, such as sports or any weight-bearing activities that put stress on the hip joint.

Options such as the iliofemoral ligament, the transverse acetabular ligament, and the pubofemoral ligament serve different primary functions. The iliofemoral ligament mainly prevents hyperextension of the hip, while the pubofemoral ligament limits excessive abduction and extension. The transverse acetabular ligament is more involved in creating a closure for the acetabular notch and supporting the labrum, rather than directly resisting rotation. Understanding the specific roles of each ligament helps clarify why the ischiofemoral ligament is the key structure in resisting