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.
Location
This ligament arises from the acetabular notch, connecting the fovea of the femoral head to the depths of the acetabulum.
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.
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.
- Vascular Supply: It houses an artery that contributes to the blood supply of the femoral head, particularly during the early developmental years.
- Proprioception: Emerging research indicates the ligamentum teres may play a role in proprioceptive feedback for the hip joint, influencing joint positioning and movement coordination.
