Associations between meniscal tears and various degrees of osteoarthritis among dogs undergoing TPLO for cranial cruciate ligament rupture

OBJECTIVE: The aim of this study was to evaluate the association between meniscal lesions and severity of osteoarthritis (OA) among dogs that underwent Tibial Plateau Leveling Osteotomy (TPLO) for stabilization of cranial cruciate ligament rupture (CrCLR) at the University of Tennessee in 2011–2017. RESULTS: There were a total of 252 meniscal tears. Factors associated with diagnosis of medial meniscal tears (MMT) in dogs were severe OA in comparison to no OA (3.8 OR, 2.0–8.0 95% CI, 0.001 p-value), sporting and mixed breed group compared to other breed (3.6 OR, 1.7–7.6 95% CI, 0.004 p-value; 3.2 OR, 1.6–6.6 95% CI, 0.019 p-value, respectively), increasing age (1.1 OR, 1.0-1.2 95% CI, 0.018 p-value), complete CrCLR compared to partial (3.3 OR, 2.1-5.0 95% CI, < 0.001 p-value), and arthrotomy compared to arthroscopy (2.2 OR, 1.4–3.1 95% CI, 0.002 p-value). The factors that did not have significance in predicting MMT were weight, sex, lameness period, and side affected.