A bursa is a fluid filled sac that protects your tendons from rubbing against your bones. Tendons are connective tissues attaching your muscle to the bone. Bursitis is an inflammation of the bursa, which can be due to excessive pressure placed over the area of the bursa or tightness of the muscles creating extra pressure on the bursa. The most common area of hip bursitis is at the side of the hip. Physical therapy will aim to decrease muscle tension, decrease pain, and restore strength and flexibility to prevent reoccurrence of bursitis.