The hip is built for weight bearing and the ability to move in several different planes. A bursa is a fluid filled sack that reduces friction between tendons as well as friction between tendons and bone. There are four bursae surrounding the hip joint with the most commonly injured bursa being the trochanteric bursa. The four major bursae of the hip are:
Trochanteric Bursa: located on the outside of the hip between the greater trochanter of the femur (leg bone) and the gluteal muscles.
Ischial Bursa: located between the hamstring muscle and the ischial tuberosity of the pelvis in the buttock area.
Iliopsoas Bursa: located in the groin area between the large psoas muscle and femur bone.
Gluteal Medius Bursa: located between the gluteus medius muscle and the greater trochanter. It is near the trochanteric bursa.