Ligament of head of femur

The ligament of the head of the femur, also known as the ligamentum teres femoris or simply ligamentum teres, is a slender ligamentous structure in the hip joint. While its functional role has been debated, recent findings indicate it may have more significance than previously thought.^[2]

Location

This ligament arises from the acetabular notch, connecting the fovea of the femoral head to the depths of the acetabulum.^[1]

Structure

• Morphology: The ligamentum teres is a narrow, pyramidal structure. It is wider at its base (acetabular attachment) and tapers as it reaches the fovea of the femoral head.
• Composition: Comprised of intertwined fibrous tissue, it also contains a small artery, known as the artery to the head of the femur.^[3]

Function

• Potential Stabilizer: Historically, its role in hip stability was considered minimal. However, recent studies have suggested it may provide some constraint, especially in specific hip positions.^[4]
• Vascular Supply: It houses an artery that contributes to the blood supply of the femoral head, particularly during the early developmental years.^[6]
• Proprioception: Emerging research indicates the ligamentum teres may play a role in proprioceptive feedback for the hip joint, influencing joint positioning and movement coordination.^[8]