Transverse acetabular ligament
Encyclopedia
The Transverse Acetabular Ligament (transverse ligament) is in reality a portion of the acetabular labrum
Acetabular labrum
The acetabular labrum is a ring of cartilage that surrounds the acetabulum ....

, though differing from it in having no cartilage
Cartilage
Cartilage is a flexible connective tissue found in many areas in the bodies of humans and other animals, including the joints between bones, the rib cage, the ear, the nose, the elbow, the knee, the ankle, the bronchial tubes and the intervertebral discs...

 cells among its fibers.

It consists of strong, flattened fibers, which cross the acetabular notch
Acetabular notch
The acetabulum presents below a deep notch, the acetabular notch, which is continuous with a circular non-articular depression, the acetabular fossa, at the bottom of the cavity: this depression is perforated by numerous apertures, and lodges a mass of fat....

, and convert it into a foramen through which the nutrient vessels enter the joint.

Prevents inferior displacement of head of femur.
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