What are the primary functions of the acetabular labrum?

The primary functions of the acetabular labrum include the important role it plays in creating a suction seal for the hip joint. This suction seal enhances joint stability and helps maintain the congruence between the femoral head and the acetabulum. By deepening the socket and providing a cushion, the labrum not only supports the mechanical stability of the hip but also helps to distribute stress across the joint surfaces during movement. This stability is crucial for maintaining proper function and preventing joint dysfunction or injury.

While acting as a protective barrier and contributing to cartilage health are relevant, the specific function of forming a suction seal distinguishes its biomechanical role in maintaining hip joint stability. This sealing effect is critical during various activities, such as walking, running, and jumping, where forces are transmitted through the hip joint.