Bursitis is an inflammation of the small sacs of fluid bursae that cushion and lubricate the areas between tendons and bones. The trochanteric bursa is a large sac separating the greater trochanter of the hip and the muscles and tendons of the thighs and buttock..Trochanteric bursitis is inflammation of the bursa fluid filled sac near a joint at the part of the hip called the greater trochanter. When this bursa becomes irritated or inflamed, it causes pain in the hip. This is a common cause of hip pain.. Trochanteric bursitis is characterized by painful inflammation of the bursa located just superficial to the greater trochanter of the femur. Activities involving running and those involving the possibility of falls or physical contact, as well as lateral hip surgery and certain preexisting conditions, are potentially associated with trochante .Bursitis is inflammation of the bursa. There are two major bursae in the hip that typically become irritated and inflamed. One bursa covers the bony point of the hip bone called the greater trochanter..