pl. bursae [L. bursa, a leather sack fr. Gr. byrsa, a hide]
1. A padlike sac or cavity found in connective tissue usually near a joint. It is lined with synovial membrane and contains a fluid (synovia) that reduces friction between tendon and bone, tendon and ligament, or between other structures where friction is likely to occur.
2. A blind sac or cavity.
SEE: Calcaneal bursa
A bursa not usually present but developing in response to friction or pressure.
A bursa between the Achilles tendon and the calcaneus.
SYN: SEE: Achilles bursa
A bursa at the elbow joint lying between the olecranon process and the skin.
The bursa of the great omentum. It communicates with the greater or true peritoneal cavity via the vestibule and the foramen of Winslow.
SYN: SEE: lesser peritoneal cavity
The bursa formed by several bursae in the region of the patella, including the suprapatellar, infrapatellar, and prepatellar bursae. Some communicate with the cavity of the knee joint.
A small median blind bursa found in the lower portion of the pharyngeal tonsil.
A large bursa lying between the acromion and the coracoacromial ligament.
SYN: SEE: subdeltoid bursa
SEE: Subacromial bursa