The acetabular fossa, also known as the cotyloid fossa, is the central aspect of the medial wall of the acetabulum that hosts the ligamentum teres and the fibrofatty pulvinar. It is the nonarticular portion inside the U-shaped labrum that extends to the acetabular notch 1. The acetabular fossa is approximately 6 mm anterior to the true center of the acetabulum 2.
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- 2. Shimodaira H, Tensho K, Akaoka Y, Koyama S, Maruyama M, Kato H, Saito N. The Acetabular Fossa May Not Be Located at the True Center of the Acetabulum: A Detailed Analysis Using Preoperative CT Images. (2018) The Journal of bone and joint surgery. American volume. 100 (5): e27. doi:10.2106/JBJS.17.00362 - Pubmed