What is greater trochanteric pain syndrome? GTPS is caused by irritation or inflammation of the bursa, or small fluid-filled sac, at the greater trochanter located at the top of your hip bone. The source of this inflammation can be muscle tightness, postural imbalances or even structural abnormalities in the hips. Greater trochanteric pain syndrome is a widely seen condition that causes discomfort and soreness around the outside of your hip, thigh or buttocks. This happens when the muscles, tendons and bursa on top of your femur become injured from overuse or wear and tear. With this chronic issue comes an increased risk for further injury if not treated correctly and appropriately. Learn more about GTPS and how you can cure it with the help of our experienced Ivanhoe physiotherapists at Australian Sports Physiotherapy.