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bursae |
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Bursae A closed sac lined with a synovial membrane and filled with fluid, usually found in areas subject to friction, such as where a tendon passes over a bone. Mentioned in: Joint Fluid Analysis bursa [bur′sə] pl. bursae Etymology: Gk, byrsa, wineskin 1 a fibrous sac between certain tendons and the bones beneath them. Lined with a synovial membrane that secretes synovial fluid, the bursa acts as a small cushion that allows the tendon to move over the bone as it contracts and relaxes. See also adventitious bursa, bursa of Achilles, olecranon bursa, prepatellar bursa. 2 a sac or closed cavity. See also omental bursa, pharyngeal bursa. bursal, adj. bursae (burˑ·sā), n.pl membrane-lined sacs containing synovial fluid, usually found in and around joints. Bursae provide protective cushioning and lubrication. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Pharyngeal bursae (Tornwaldt's bursae): A report of 64 cases. 7,8,13) The pain associated with impingement has been linked to the functional compromise of the subacromial space and the structures within the space: rotator cuff, long head of the biceps muscle, and bursae. Delay of diagnosis is common, and invasion into deeper structures such as synovia, bursae, and bone occurs in approximately one third of reported case-patients (1). |
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