Good functional outcomes after endoscopic treatment for greater trochanteric pain syndrome

Abstract Purpose Greater trochanteric pain syndrome (GTPS) is a term covering different conditions generating lateral hip pain. Recalcitrant cases may require surgery but there are only a few studies evaluating endoscopic treatment. This study aimed to evaluate the outcome of endoscopically treated GTPS at minimum two years postoperatively using patient‐reported outcome measures (PROMs), and to assess the complication rate associated with endoscopic surgery. Methods A total of 33 patients, mean age 43.2 years, 88% women, with a mean symptom duration of 3.5 years, were included in the study. A total of 36 operated hips were included. Pre‐ and at minimum two years postoperatively the patients completed questionnaires consisting of the International Hip Outcome Tool (iHOT‐12) and the Hip Sports Activity scale (HSAS), the Visual analogue scale for overall hip function (VAS‐OHF), the Copenhagen Hip and Groin Outcome Score (HAGOS), the EuroQoL‐5 Dimension Questionnaire (EQ‐5D) and the EQ‐VAS. Complications were assessed using the Clavien‐Dindo classification. Results Median follow‐up time was 24.5 months postoperatively. Statistically significant improvements were seen for the following PROMs (p < 0.05); iHOT‐12 (36.3 vs 54.0), HAGOS different subscores (40.8 vs 59.0, 46.5 vs 62.6, 29.9 vs 53.1, 33.5 vs 51.4, 20.7 vs 41.4, 23.4 vs 43.3), EQ‐VAS (55.9 vs 63.3) and EQ‐5D (0.392 vs 0.648). VAS‐OHF and HSAS did not reach significance. There was a 71% satisfaction rate with the surgery. Three Clavien‐Dindo grade 1 and one grade 2 complications were registered postoperatively, with 41% of patients achieving PASS for iHOT‐12 at two years follow‐up. Conclusion Endoscopic surgery for greater trochanteric pain syndrome improved patient‐reported outcomes and the procedure was associated with low risk of complications. Level of evidence Level IV