Lunate surface
Facies lunata
Definition
The interior of the acetabulum is partitioned into two areas: 1) acetabular fossa and 2) lunate surface.
The lunate surface, a peripheral, horseshoe-shaped articular region within the acetabulum, is lined with hyaline cartilage and connects with the femoral head, contributing to the hip joint. Within the lunate surface is the central rough area known as the acetabular fossa, covered with fat and lined by a synovial membrane. Unlike the lunate surface, the acetabular fossa does not articulate with the femoral head.
References
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Text by Antoine Micheau, MD and revised 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/
