Bursas are small fluid-filled sacs lined by synovial membrane with an inner capillary layer of viscous fluid (similar in consistency to that of a raw egg white). It provides a cushion between bones and tendons and/or muscles around a joint. This helps to reduce friction between the bones and allows free movement. Bursas are filled with synovial fluid and are found around most major joints of the body.
One of the most common types of bursitis is Trochanteric Bursitis. The greater trochanter of the femur is the bony point on the top/side of the leg bone. Trochanteric bursitis is characterized by painful inflammation of the bursa located just superficial to the greater trochanter. 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 trochanteric bursitis.
What causes it?
- physical trauma to muscles, tendons
- prolonged pressure on the bursa
- activities that require twisting or fast joint movement, such as jogging or cycling
- previous hip surgery
- bad posture
- hip bone spurs or calcium deposits
- Sharp or burning hip pain and tenderness
- Buttock pain that spreads to outer thigh and knee
- Pain with activities such as walking, getting out of a deep chair or sitting cross-legged
- Pain that disturbs sleep
- Pain when pressing on outside of hip
- Soreness and redness