Transverse_acetabular_ligament
The transverse acetabular ligament (transverse ligament[1] or Tunstall's ligament[citation needed]) bridges the acetabular notch, creating the a foramen (through which blood vessels and nerves pass into the joint cavity).[2] The ligament is one of the sites of attachment of the ligament of head of femur.[1][3]: 789
Some sources consider the transverse acetabular ligament as the part of the acetabular labrum over the acetabular notch,[1][4][3]: 786 while another states that the labrum attaches onto the ligament.[2]