DEAR DOCTOR K: I have knee bursitis. What is bursitis? What can I do to relieve my discomfort?
DEAR READER: A bursa is a sac-like structure that sits over large joints such as the knee or hip joints. Bursae act as cushions between muscle and bone and reduce friction during movement. When a bursa becomes painful or inflamed, the condition is called bursitis. The symptoms of knee bursitis include pain made worse by movement of the knee, but which is still present even when the knee is not moving.