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Hip Capsular Repair Results in Improved Patient-Reported Outcomes and Survivorship: A Systematic Review of the Literature

Published:November 14, 2022DOI:https://doi.org/10.1016/j.arthro.2022.11.013

      Purpose

      To determine whether routine capsular closure following hip arthroscopy for femoroacetabular impingement (FAI) in patients without dysplasia results in improved patient-reported outcomes (PROs) and increased survivorship rates.

      Methods

      A literature search of the PubMed, Embase, and Cochrane Library databases was performed using the Preferred Reporting for Systematic Reviews and Meta-Analyses guidelines for clinical studies reporting PROs following arthroscopic hip labral repair for FAI. A quality assessment was performed using the Methodological Index for Non-randomized Studies grading system. Inclusion criteria consisted of comparative clinical studies investigating routine capsular closure with nonclosure in patients undergoing hip arthroscopy for the treatment of FAI and labral tears. Exclusion criteria included non-English language, minimum follow-up of less than 2 years after surgery, technique articles, case reports, noncomparative case series of fewer than 10 patients, failure to report surgical technique, absence of postoperative PROs, or partial repair. Data collection included study characteristics, demographics, indications, radiographic metrics, perioperative findings, surgical technique, baseline and most recent PROs, and subsequent surgeries.

      Results

      A total of 531 articles were reviewed, of which 3 were included with 249 hips that underwent capsular repair and 157 hips that underwent capsulotomy with no repair. There were 2 Level III studies and 1 Level II study, with an average The Methodological Index for Non-randomized Studies score of 16.7. All studies cited FAI and labral tear as an indication for surgery. All studies demonstrated improved PROs from baseline to most recent follow-up. Postoperatively, the repair group reported modified Harris Hip Score values ranging from 80.8 to 87, whereas the nonrepair group reported scores ranging from 76 to 81.7. In addition, the repair group reported postoperative Hip Outcome Score – Sports-Specific Subscale values ranging from 68.1 to 9, whereas the nonrepair group reported scores ranging from 65.3 to 76.1. The studies also reported minimal clinically important difference for modified Harris Hip Score, with the repair group reporting percentages ranging from 71 to 100 and the nonrepair group reporting percentages ranging from 52 to 95.6. All 3 studies also observed a lower rate of hip survivorship in the nonrepair group, ranging from 94.6 to 100 in the repair group and 90.8 to 100 in the nonrepair group. There were no significant differences in the rate of revision arthroscopy between groups.

      Conclusions

      Patients without dysplasia who undergo capsular repair have greater improvements in PROs and greater survivorship rates at early- and mid-term follow-up than patients who do not undergo capsular repair.

      Level of Evidence

      III, systematic review of level II and III studies.
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