Iliotibial Band Friction Syndrome-MRI

The iliotibial band  is a thick band of fascia formed proximally at the hip by the fascia of the gluteus maximus, gluteus medius and tensor fascia latae muscles. It inserts onto Gerdy's tubercle on the anterior lateral tibia and the intermuscular septum of the distal femur.When the knee flexes, the ITB moves posteriorly along the lateral femoral epicondyle. When the band is excessively tight or stressed, the ITB rubs against the epicondyle irritating the lateral synovial recess.