Mid- to long-term clinical outcomes of arthroscopic surgery for external snapping hip syndrome

Chun-Ting Chu; Huan Hsu; Hao-Che Tang; Alvin Chao-Yu Chen; Yi-Sheng Chan

doi:10.1093/jhps/hnab062

Mid- to long-term clinical outcomes of arthroscopic surgery for external snapping hip syndrome

J Hip Preserv Surg. 2021 Aug 24;8(2):172-176. doi: 10.1093/jhps/hnab062. eCollection 2021 Jul.

Authors

Chun-Ting Chu¹, Huan Hsu², Hao-Che Tang³, Alvin Chao-Yu Chen², Yi-Sheng Chan²

Affiliations

¹ Department of General Medicine, Chang Gung Memorial Hospital, No. 5, Fuxing Street, Guishan District, Taoyuan City 333, Taiwan.
² Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, No. 5, Fuxing Street, Guishan District, Taoyuan City 333, Taiwan.
³ Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, No. 222, Maijin Road, Anle District, Keelung City 204, Taiwan.

Abstract

This study evaluated the outcomes of arthroscopic surgery for the treatment of external snapping hip at 2- to 10-year follow-ups. Eighteen patients with refractory external snapping hip treated by arthroscopic surgery were enrolled in this prospective study. All patients underwent unsuccessful conservative treatment for more than 3 months before surgery. We made diamond-shaped defects on the iliotibial band and resected peripheral fibrosis tissues for iliotibial band release with an arthroscopic approach. The visual analog scale (VAS), modified Harris hip score and return to previous level of activity were evaluated as functional outcomes. In addition, residual discomfort or the presentation of complications was also investigated. The average follow up period was 7 years. The modified Harris hip score increased from 70.08 preoperatively to 93.14 postoperatively, and the VAS score decreased from 3.67 preoperatively to 1.17 2 weeks after the operation and declined to 0.33 at the last follow-up. Neither recurrence of snaps nor complications were recorded. Two patients complained of a tight sensation with tenderness after exertion. Our clinical outcomes were compatible with those of previous studies, and no long-term complications were noted, even with a relatively longer follow-up period than what was reported in previous studies. Arthroscopic surgery is a safe and effective treatment that can provide promising long-term clinical outcomes for patients with refractory external snapping hip.