Endoscopic Treatment of Recurred External Snapping Hip After Endoscopic Iliotibial Band Release.

External snapping hip is caused by snapping of the thickening of the posterior portion of the iliotibial band or the anterior border of the gluteus maximus over the greater trochanter. Surgery is considered for patients who are refractory to conservative treatment. The endoscopic release of the iliotibial band or the endoscopic release of the femoral insertion of the gluteus maximus tendon is the most popular technique. There is a recurrence rate of 7-29% after endoscopic surgery. Although recurrence is often painless, revision surgery may be indicated for symptomatic recurrence. In this Technical Note, the technical details of endoscopic treatment of recurred external snapping hip after endoscopic iliotibial band release. The key to success is adequate release of the iliotibial band, gluteus maximus tendon, and the fibrosis underneath the iliotibial band.