Partial Meniscectomy Yields Comparable Outcomes and Failure Rates to Meniscal Repair for Horizontal Cleavage Tears, with Fewer Complication Rates but Greater Progression of Degenerative Changes.

Abstract

Purpose: To compare the clinical outcomes, failure rates, surgical complications, and postoperative radiographic changes following partial meniscectomy versus meniscal repair for horizontal cleavage tears (HCTs).

Methods: A literature search was performed according to the 2020 Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines using the Scopus, PubMed, and Embase computerized databases. Clinical studies evaluating partial meniscectomy or meniscal repair for HCTs were included. Demographic characteristics, surgical techniques, clinical outcomes, failure rates, complications, and radiographic assessments were recorded.

Results: A total of 18 studies comprising of 833 patients with HCT were included, of which 562 patients (67.5%) were treated with partial meniscectomy and 271 (32.5%) with meniscal repair. Both types of treatments reported improved clinical outcomes, including IKDC, Lysholm, KOOS, and Tegner scores. Failure rates were reported to range between 0 to 15% following partial meniscectomy, and between 0 to 17.6% following repair; and complications were 7.5% after partial meniscectomy, and between 3.8 to 21.4% following meniscal repair. Patients undergoing meniscectomy demonstrated progression of degenerative changes on radiographic assessments.

Conclusion: Repair of HCTs in the appropriately indicated patient can result in similar patient outcomes and failure rates compared to partial meniscectomy. However, especially in patients aged 42 years and younger, a greater complication rate can be expected with repair, while a greater degree of ipsilateral compartment degeneration is seen after partial meniscectomy.