External Snapping Hip Syndrome Endoscopic Treatment: "Fan-like" Technique as a Stepwise, Tailor-made Solution

Classically, external snapping hip syndrome (ESHS) is considered to be caused by friction of a tight iliotibial band (ITB) over the greater trochanter (GT), which leads to pain, inflammation, and palpable or audible snapping. Surgical treatment remains a gold standard in patients resistant to conservative measures. Many surgical procedures addressing ESHS exist in the literature, but the vast majority of them involve only plasties of the ITB. However, observations led us to the conclusion that friction of the ITB over the GT may not be the only cause of ESHS and other structures like gluteal fascias or an anterior scarred part of gluteus maximus may be involved. The aim of this article is to provide a detailed description and video demonstration of an endoscopic surgical procedure using a "fan-like" cut to treat the ESHS. Its greatest advantage is the ability to gradually increase the extent of surgery based on intraoperative observations. It turns the procedure into a tailor-made surgery, which offers good and reproducible results.