Structure
Bursae are sac-like structures, with an inner synovial membrane, that produces a thin film of synovial fluid. They aid in reducing friction between moving tissues of the body, such as between tendon and bone, ligament and bone, tendons and ligaments, and between muscles.
Inflammation of the bursa is known as bursitis. If the inflammation is due to injury or strain, it is known as aseptic bursitis. However, if the inflammation is caused by infection, it is known as septic bursitis.
Related parts of the anatomy
Anatomical Relations
The subcutaneous calcaneal bursa is located between the skin and the calcaneal (Achilles’) tendon.
Function
The subcutaneous calcaneal bursa allows the skin to glide over the calcaneal tendon.
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Synovial Bursa
A synovial bursa is a simple sac lying between a tendon or muscle and an adjacent bony prominence.
