Coxa profunda refers to a deep acetabular socket. On pelvis x-rays it is seen as the acetabular fossa being medial to the ilioischial line. It should be differentiated from protrusio acetabuli, where the femoral head is seen additionally medial to the ilioischial line. Coxa profunda is much more common in females.
Coxa profunda is a non-specific finding and has previously been implicated in pincer-type femoroacetabular impingement, but is just as likely to be seen in asymptomatic patients 1,2.
- 1. Anderson LA, Kapron AL, Aoki SK et-al. Coxa profunda: is the deep acetabulum overcovered?. Clin. Orthop. Relat. Res. 2012;470 (12): 3375-82. doi:10.1007/s11999-012-2509-y - Free text at pubmed - Pubmed citation
- 2. Nepple JJ, Lehmann CL, Ross JR et-al. Coxa profunda is not a useful radiographic parameter for diagnosing pincer-type femoroacetabular impingement. J Bone Joint Surg Am. 2013;95 (5): 417-23. doi:10.2106/JBJS.K.01664 - Pubmed citation
- 3. Femoroacetabular Impingement. Springer. ISBN:3642227686. Read it at Google Books - Find it at Amazon