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Objective: To date, there are no studies addressing the efficacy of hyaluronic acid (HA) injections at the trochanteric bursa in patients with greater trochanteric pain syndrome (GTPS). The objective of the study was to compare the efficacy and safety of HA to corticosteroid injections for the treatment of the GTPS. Methods: This prospective, randomized, two-arm trial involved 47 patients with unilateral or bilateral GTPS. Patients received an intra-bursal injection of 40 mg triamcinolone acetonide plus 1mL lidocaine, or of 60 mg HA. Patients completed visual analog scales (VAS) and Likert scales to evaluate interference of pain with daily activity, recovery from pain, and treatment satisfaction. A non-inferiority analysis was also performed. Results: Mean VAS score for pain significantly decreased comparing baseline with 1, 3 and 6 months in both treatment groups. VAS score for pain on palpation was also significantly lower than baseline in both arms. No significant differences were found between groups. Analysis of Likert scales at the sixth month didn’t detect statistically significant differences between treatment groups. The non-inferiority analysis showed that the treatment with HA was non-inferior to corticosteroids. No secondary adverse effects were found among the patients of both groups during the follow-up. Conclusions: The treatment with HA has demonstrated to be non-inferior to corticosteroids after 6 months of follow-up in patients with GTPS. Therefore, the treatment with HA may be considered an effective alternative therapeutic strategy to reduce pain in patients in whom the treatment with corticosteroids, or other therapies, have been unsuccessful or contraindicated.

A Comparative Study between Hyaluronic Acid and Corticosteroids for the Treatment of the Greater Trochanteric Pain Syndrome