Clinical outcomes of meniscus repair and partial meniscectomy: Does tear configuration matter?

Abstract

Purpose: We report our experience with the effect of location and configuration of meniscal tears on clinical outcomes. Methods: A retrospective review of patients who underwent partial meniscectomy or meniscal repair between 2008 and 2016 was conducted. One hundred fourteen knees in 106 patients were included, comprising 43 partial meniscectomies and 71 meniscal repairs. Patients were graded pre- and postoperatively with the International Knee Documentation Committee (IKDC) score and Tegner Activity Level Scale. Meniscal tears were classified according to location (anterior horn, body, posterior horn, and others) and type (radial, horizontal, longitudinal, and complex) and subgroups were analyzed for their effect on outcomes. Results: All tears, whether treated with partial meniscectomy or repair, showed significant improvement in postoperative scores ( p < 0.05); 39.47% of tears involved the posterior horn alone, 10.53% involved the body alone, 3.51% involved the anterior horn alone, and 46.49% were complex tears that spanned more than one area. Complex tears treated with repair had significantly better scores (IKDC, p = 0.002; Tegner, p = 0.008) than complex tears treated with meniscectomy. Longitudinal tears showed results suggesting better short-term outcomes with meniscectomy than with repair (IKDC, p = 0.036; Tegner p = 0.018), a potential statistical anomaly. Horizontal and radial tears showed no significant difference in outcomes, regardless of treatment. Tears in different locations (anterior horn, body, posterior horn, and others) showed no significant difference in outcomes, regardless of treatment. Conclusion: Meniscal surgery yields significant improvement in postoperative scores. Complex tears showed significantly better postoperative scores when treated with repair.