A bursa is a thin, fluid-filled sack located near the joints that assists in lubricating and cushioning the joints against any pressure. The fluid that is inside of a bursa is called synovial fluid and it is rich in collagen and protein. Its function is to prevent the tendons, ligaments, skin, muscles and bones from rubbing against each other and to facilitate easy, painless joint movements. Bursitis is one of the most common orthopedics problems and it causes inflammation and pain around joints, tendons, and ligaments.

Although there are over 150 bursae throughout the body, bursitis only affects the joints that are used most frequently. Shoulders, elbows, hips and knees are the most common targets of bursitis, but it may also affect heels and the base of the foot surrounding the big toe. It typically affects people who are over 40 years of age and bursitis can be cured in approximately one week, but its recurrence can be irritating and may disrupt a person’s lifestyle.