Ischiofemoral Impingement (IFI)
Ischiofemoral impingement (IFI) is a condition in which there is abnormal contact between the lesser trochanter (thigh bone) and the ischium (pelvic bone) due to narrowing of the space which places pressure on the muscular structures in between. It is becoming an increasingly more recognized source of deep buttocks and hip pain. Treatment typically consists of rest, anti-inflammatories, physical therapy and selective ultrasound guided injections of cortisone. Rarely does this condition go on to require surgery. Surgery entails opening up the space in order to release pressure off the quadratus femoris muscle. This is performed arthroscopically.