Acetabular fossa

Fossa acetabuli

Definition

The interior of the acetabulum is partitioned into two sections: 1) acetabular fossa and 2) lunate surface.

The acetabular fossa is the central area that lacks articulation. It is covered by a layer of fat and is lined by a synovial membrane. Surrounding the acetabular fossa is a horseshoe-shaped region known as the lunate surface. Unlike the acetabular fossa, the lunate surface is covered by hyaline cartilage and connects with the femoral head, playing a role in the hip joint.

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Text written by Muhammad A. Javaid, MD, PhD © 2023 IMAIOS.

  • Standring, S. and Gray, H. (2016). ‘Chapter 80: Pelvic girdle gluteal region and thigh’ in Gray’s anatomy The anatomical Basis of Clinical Practice. (41st ed.) New York: Elsevier, pp. 1339-1342.

  • Wobser, A.M., Adkins, Z. and Wobser, R.W. Anatomy, Abdomen and Pelvis: Bones (Ilium, Ischium, and Pubis) [Updated 2022 Jul 25]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2023 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK519524/


Comparative anatomy in animals

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