Background: Pain following hip arthroscopy is highly variable and can be severe. Little published data exists\ndemonstrating reliable predictors of significant pain after hip arthroscopy. The aim of this study was to identify\ninfluence of intraoperative factors (arthroscopic fluid infusion pressure, operative type) on the severity of\npostoperative pain.\nMethods: A retrospective review of 131 patients who had received a variety of arthroscopic hip interventions was\nperformed. A standardized anaesthetic technique was used on all patients and postoperative pain was analysed\nusing recovery pain severity outcomes and analgesic use. A multivariate logistic regression analysis was performed\non intraoperative factors including patient age, sex and BMI, arthroscopic infusion pressures (40 vs 80 mm Hg),\namount of fluid used, length of surgery and types of arthroscopic interventions performed. Thirty six patients were\nalso prospectively examined to determine arthroscopic fluid infusion rates for 40 and 80 mm Hg infusion pressures.\nResults: Use of a higher infusion pressure of 80 mm Hg was strongly associated with all pain severity endpoints (OR\n2.8 ââ?¬â?? 8.2). Other significant factors included hip arthroscopy that involved femoral chondro-ostectomy (OR 5.8) and\nlabral repair (OR 7.5). Length of surgery and total amount of infusion fluid used were not associated with increased pain.\nConclusions: 80 mm Hg arthroscopic infusion pressures, femoral chondro-osteoectomy and labral repair are\nstrongly associated with significant postoperative pain, whereas intraoperative infusion volumes or surgical duration\nare not. Identification of these predictors in individual patients may guide clinical practice regarding the choice of\nmore invasive regional analgesia options. The use of 40 mm Hg arthroscopic infusion pressures will assist in\nreducing postoperative pain.
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