Bursitis Definition
Definition
Bursitis is inflammation of a bursa. A bursa is a thin, slippery piece of tissue that protects tendons. Tendons are the tissues that connect muscles to bones. The bursa reduces friction between the tendon and bone. It allows the tendon to glide easily over the bone.
There are many bursae in the body protecting underlying tendons. Bursitis most often occurs in the following joints:
- Shoulder
- Elbow
- Knee
- Hip
Bursitis in the Shoulder

