There are two main bursae in each hip: one on the bony point and one on the inside, or groin area, of the hip. Most often, bursitis is caused by frequent “mini-traumas,” which can equate to the same hip condition produced by a single, more serious trauma. People who bike, run or stand, especially on hard surfaces for long intervals, may be more prone to bursitis of the hip.
Falling on the outside of the hip, or hitting the hip on any hard surface, can cause a hip bursa to fill with blood and inflame its lining. Even though the body reabsorbs the blood, the bursa lining may stay inflamed, causing the symptoms of bursitis. This condition is termed “traumatic bursitis.”