Podium Presentation Title: Impact of Concurrent Chondroplasty with Meniscectomy on Rate of TKA in a Matched Cohort

Previous studies have questioned the benefit of conducting meniscectomy in patients with osteoarthritis (OA). This study sought to identify whether undergoing meniscectomy, or without chondroplasty, differed rates subsequent TKA and time TKA. A national administrative claims database was queried for who underwent between 2015-2018, excluding rheumatoid arthritis at surgery. The population stratified by concurrent chondroplasty matched age, gender, Charlson Comorbidity Index (CCI), OA, obesity, tobacco use, key comorbidities. primary outcome within 3 years. secondary Significance P=0.05. Our sample size powered > 90% detect 1% difference rate groups. 6,631 per group were identified. Demographics did not vary Meniscectomy less likely undergo (38 [0.6%] vs. 64 [1.0%], RR=0.59, 95%CI 0.40-0.89, P=0.01). Median 141 days (IQR 53-534) only 57-1443) (P=0.58). Patients alone more any medical complications (3.2% 2.4%, P=0.005), particularly UTI (1.7%, 1.3%, P=0.047). In multivariable logistic regression, significant predictors obesity (adj-OR=2.00, 1.33-3.03, P=0.001), age (adj-OR=1.05, 1.03-1.07, P<0.0001), complex tear (adj-OR 3.38, 2.16-5.30, other/unspecified type (adj-OR=23.39, 13.69-41.55, P<0.0001). overall increased risk compared plus chondroplasty. a 3-4 times likelier get These findings suggest does accelerate, may even delay, progression end-stage disease requiring