2025 ISAKOS Biennial Congress ePoster
Superior Healing Rates in Lateral vs. Medial Meniscus Posterior Root Repairs: The Impact of Postoperative Meniscal Extrusion on Healing Rates and Clinical Outcomes- A Systematic Review
Lika Dzidzishvili, MD, PhD, Barcelona SPAIN
Gloria Pedemonte-Parramón, MD, Barcelona SPAIN
Ester Garcia-Oltra, MD, PhD, Barcelona SPAIN
Vicente López, Barcelona SPAIN
José Antonio Hernández-Hermoso, MD, PhD, Barcelona SPAIN
Hospital Universitari Germans Trias i Pujol, Barcelona, SPAIN
FDA Status Not Applicable
Summary
Lateral meniscus posterior root repairs showed higher healing rates compared to medial roots. Postoperative clinical improvements did not influence meniscal extrusion and healing status.
ePosters will be available shortly before Congress
Abstract
Purpose
(1) To summarize the available literature evaluating the healing rates after lateral (LMPRR) and medial meniscus posterior root repair (MMPRR). (2) To assess the correlation between postoperative meniscal extrusion (ME) and healing status on magnetic resonance imaging (MRI) and second-look arthroscopy.
Methods
A comprehensive literature search was conducted using the Scopus, PubMed, and Embase databases. Human clinical studies evaluating healing status on second-look arthroscopy and MRI after LMPRR and MMPRR were included. Study quality was assessed using the Methodological Index for Non-Randomized Studies criteria and the modified Coleman Methodology Score.
Results
Twenty-three studies comprising of 881 patients with LMPRR (n=406) and MMPRR (n=475) were included. Overall, 223 (54.9% of the total) and 239 (50.3% of the total) patients underwent second-look arthroscopy in the LMPRR and MMPRR groups, respectively. Complete root healing was observed in 190 (85.2%) patients in the LMPRR group versus 108 (45.2%) in the MMPRR group (p<0.001). There were six (2.7%) failed repairs in the LMPRR group compared to 21 (8.8%) in the MMPRR group (p<0.001). On postoperative MRI, 109 (75.7%) root repairs were healed in the LMPRR group compared to 162 (55.3%) in the MMPRR group (p<0.001). Failures were observed in 8 (5.6%) LMPRR repairs vs 40 (13.7%) MMPRR repairs (p<0.001). A greater degree of postoperative ME was associated with lower healing rates (R = -0.78, p<0.0005). Postoperative ME did not influence clinical outcomes (R = 0.28, p=0.29).
Conclusions
Lateral meniscus posterior root repairs showed higher healing rates compared to MMPRR on both second-look arthroscopy and postoperative MRI. An inverse correlation was observed between the degree of residual ME and the healing rate after root repair, with greater extrusion associated with lower healing rates. Postoperative clinical improvements did not influence ME and healing status.