| obturator lymph nodes | Nodes of the internal iliac group located along the obturator artery. Synonym: nodi lymphatici obturatorii. (05 Mar 2000) |
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| obturator membrane | The thin membrane of strong interlacing fibres filling the obturator foramen. Synonym: membrana obturatoria. (05 Mar 2000) |
| obturator nerve | <anatomy, nerve> A nerve originating in the lumbar spinal cord (l2 to l4) and traveling through the lumbar plexus to the lower extremity. The obturator nerve provides motor innervation to the adductor muscles of the thigh and cutaneous sensory innervation of the inner thigh. (12 Dec 1998) |
| obturator tubercle | One of two processes, anterior and posterior, on the margin of the pubic portion of the obturator foramen, bounding the termination of the obturator groove. Synonym: tuberculum obturatorium. (05 Mar 2000) |
| obturator vein | <anatomy, vein> Formed by the union of tributaries draining the hip joint and the obturator and adductor muscles of the thigh; it enters the pelvis by the obturator canal as venae comitantes of the obturator artery and empties into the internal iliac vein. Synonym: vena obturatoria. (05 Mar 2000) |
| external obturator muscle | <anatomy, muscle> Origin, lower half of margin of obturator foramen and adjacent part of external surface of obturator membrane; insertion, trochanteric fossa of greater trochanter; action, rotates thigh laterally; nerve supply, obturator. Synonym: musculus obturator externus, external obturator muscle. (05 Mar 2000) |
| Achilles bursa | Bursa between the tendo calcaneus and the upper part of the posterior surface of the calcaneum. Synonym: bursa tendinis calcanei, bursa achillis, Achilles bursa. (05 Mar 2000) |
| adventitious bursa | <anatomy> A bursa-like cyst formed between two parts as a result of friction. (05 Mar 2000) |
| anserine bursa | <anatomy> The bursa between the tibial collateral ligament of the knee joint and the tendons of the sartorius, gracilis, and semitendinosus muscles. Synonym: bursa anserina, tibial intertendinous bursa. (05 Mar 2000) |
| anterior tibial bursa | <anatomy> The small bursa between the medial surface of the medial cuneiform bone and the tendon of the tibialis anterior. Synonym: bursa subtendinea musculi tibialis anterioris, anterior tibial bursa. (05 Mar 2000) |
| bicipitoradial bursa | <anatomy> The bursa between the tendon of the biceps brachii muscle and the anterior part of the tuberosity of the radius. Synonym: bursa bicipitoradialis. (05 Mar 2000) |
| Boyer's bursa | <anatomy> A bursa between the posterior surface of the body of the hyoid bone and the thyrohyoid membrane. Synonym: bursa retrohyoidea, Boyer's bursa, bursa of hyoid, subhyoid bursa. (05 Mar 2000) |
| Brodie's bursa | <anatomy> Medial subtendinous bursa of gastrocnemius muscle. Synonym: bursa of semimembranosus. (05 Mar 2000) |
| bursa | <anatomy> A tissue space (fibrous sac) that is lined with synovial membrane (joint tissue) and contains a small quantity of synovial fluid (joint fluid). Bursas are found in between tendon and bone, skin and bone and muscles. They function to facilitate fluid movement. (27 Sep 1997) |
| bursa achillis | An alternate term for bursa of tendo calcaneus. (05 Mar 2000) |