Obturator externus bursa
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 .
Related pathology
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 .
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% .
See also
