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Archive for April 21st, 2011

Bursa

Bursa

A bursa is the fluid-filled sac that provides a cushion between the bones, tendons, and muscles surrounding a joint.  This helps the knee move freely and protects the bones and cartilage.  The knee bursa is filled with synovial fluid.  Bursa is latin for “purse” because the fluid-filled sac looks a lot like a small purse.

Receiving an injection of synovial fluid is a treatment option for knee osteoarthritis.