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Title: [Clinical Results of Endoscopic Treatment of Greater Trochanteric Pain Syndrome].
Author: Zeman P, Rafi M, Skala P, Zeman J, Matějka J, Pavelka T.
Journal: Acta Chir Orthop Traumatol Cech; 2017; 84(3):168-174. PubMed ID: 28809635.
Abstract:
PURPOSE OF THE STUDY This retrospective study aims to present short-term clinical outcomes of endoscopic treatment of patients with greater trochanteric pain syndrome (GTPS). MATERIAL AND METHODS The evaluated study population was composed of a total of 19 patients (16 women, 3 men) with the mean age of 47 years (19-63 years). In twelve cases the right hip joint was affected, in the remaining seven cases it was the left side. The retrospective evaluation was carried out only in patients with greater trochanteric pain syndrome caused by independent chronic trochanteric bursitis without the presence of m. gluteus medius tear not responding to at least 3 months of conservative treatment. In patients from the followed-up study population, endoscopic trochanteric bursectomy was performed alone or in combination with iliotibial band release. The clinical results were evaluated preoperatively and with a minimum follow-up period of 1 year after the surgery (mean 16 months). The Visual Analogue Scale (VAS) for assessment of pain and WOMAC (Western Ontario MacMaster) score were used. In both the evaluated criteria (VAS and WOMAC score) preoperative and postoperative results were compared. Moreover, duration of surgery and presence of postoperative complications were assessed. Statistical evaluation of clinical results was carried out by an independent statistician. In order to compare the parameter of WOMAC score and VAS pre- and post-operatively the Mann-Whitney Exact Test was used. The statistical significance was set at 0.05. RESULTS The preoperative VAS score ranged 5-9 (mean 7.6) and the postoperative VAS ranged 0-5 (mean 2.3). The WOMAC score ranged 56.3-69.7 (mean 64.2) preoperatively and 79.8-98.3 (mean 89.7) postoperatively. When both the evaluated parameters of VAS and WOMAC score were compared in time, a statistically significant improvement (p<0.05) was achieved postoperatively. The mean duration of surgical procedure was 68 minutes. Moreover, in peritrochanteric space apart from chronic bursitis also another pathology was found in a total of 14 cases (74%). In six cases (32%) it was a mild degeneration of m. gluteus medius (treated only with debridement) and in eight patients who underwent surgery (42%) the dorsal third of tractus iliotibialis was hypertrophic and protruding into bursa (treated with an incision of the hypertrophied part of the band). No serious neurovascular or thromboembolic complications were recorded. Only minor postoperative complications in a total of 7 patients who underwent surgery (37%) occurred. DISCUSSION There are lots of studies in literature presenting the results of endoscopic treatment of GTPS either using an independent trochanteric bursectomy or its combination with iliotibial band release. In our study we succeeded in achieving similar clinical results as those achieved by the other authors engaged in this area. CONCLUSIONS It has been proven in this retrospective study that the technique of endoscopic trochanteric bursectomy in patients with greater trochanteric pain syndrome yields statistically significant improvement of clinical results with the concurrent minimum incidence of postoperative complications. Key words: greater trochanteric pain syndrome, peritrochanteric space, recalcitrant trochanteric bursitis, hip arthroscopy, endoscopic trochanteric bursectomy, iliotibial band release.

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