Trochanteric Bursitis: Symptoms, Causes, Treatments

The hip joint. The greater trochanter is the ridge at the top of the femur. What is trochanteric bursitis? Trochanteric bursitis is inflammation (swelling) of the bursa (fluid-filled sac near a joint) at the outside (lateral) point of the hip known as the greater trochanter. When this bursa becomes irritated or inflamed, it causes pain in the hip.

https://my.clevelandclinic.org/health/diseases/4964-trochanteric-bursitis