Obturator externus bursa
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At the time the article was created Patrick O'Shea had no recorded disclosures.View Patrick O'Shea's current disclosures
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The obturator externus bursa is situated over the posteroinferior aspect of the hip joint. It is a potential communication of the postero-inferior hip joint synovium between the ischiofemoral ligament and the zona orbicularis 1,2.
Obturator externus bursa may occur in patients with chronic hip synovitis and raised intra-articular pressure. Distension of the bursa leads to inferior displacement of the obturator externus muscle 1.
The overall prevalence of communication between the hip joint and the obturator externus bursa in the normal population remains unknown, but has been estimated to be less than 5.5% 3.
- 1. Robinson P, White LM, Agur A, Wunder J, Bell RS. Obturator externus bursa: anatomic origin and MR imaging features of pathologic involvement. (2003) Radiology. 228 (1): 230-4. doi:10.1148/radiol.2281020819 - Pubmed
- 2. Souza P, Santos E. Bursae around the hip: anatomy, pathology, and mimics. (2014) doi:10.1594/ecr2014/C-0476
- 3. Ara Kassarjian, Eva Llopis, Richard B. Schwartz, Jenny T. Bencardino. Obturator externus bursa: prevalence of communication with the hip joint and associated intra-articular findings in 200 consecutive hip MR arthrograms. (2009) European Radiology. 19 (11): 2779. doi:10.1007/s00330-009-1476-5 - Pubmed