One of the primary causes of hip pain is bursitis, which is an inflammation of the bursa. These fluid-filled sacs are found around the body and serve as cushions between bones and soft tissues such muscles, tendons, and skin. Each hip has two major bursae. The outside point of the hip, which is called the greater trochanter, has a bursa called the trochanteric bursa. (The other bursa, on the inside of the hip area, is called the iliopsoas bursa.) When that outside hip bursa gets inflamed, you have trochanteric bursitis. Also known as greater trochanteric pain syndrome, it is a common condition and easily treatable.