PMID- 33364610 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220716 IS - 2666-061X (Electronic) IS - 2666-061X (Linking) VI - 2 IP - 6 DP - 2020 Dec TI - Time to Achievement of Clinically Significant Outcomes After Isolated Arthroscopic Partial Meniscectomy: A Multivariate Analysis. PG - e723-e733 LID - 10.1016/j.asmr.2020.06.002 [doi] AB - PURPOSE: To define the time required to achieve the minimally clinically important difference (MCID), substantial clinical benefit (SCB) and patient acceptable symptomatic state (PASS) for isolated arthroscopic partial meniscectomy (APM), and define preoperative and intraoperative factors that predict both early and late achievement of the stated metrics. METHODS: Patients who underwent isolated APM between 2014 and 2017 were retrospectively included. Patients without preoperative and 6-month patient-reported outcome measure scores, revision procedures, and significant concomitant procedures were excluded. The MCID, SCB, and PASS were calculated for knee-based patient-reported outcome measure scores using receiver operating curve analysis. Kaplan-Meier survival analysis established the time required to achieve MCID, SCB and PASS. Hazard ratios from multivariate Cox regression allowed for the isolation of demographic and intraoperative factors predictive of the delayed time required to achieve MCID, SCB and PASS. RESULTS: A total of 126 patients (42.86% female, age: 48.9 +/- 12.4 years) were included. Overall achievement rates ranged between 73.0% and 89.7% for MCID, 43.7% and 68.2% for SCB, and 50.8% and 68.3% for PASS. Median achievement time for MCID was 5.68-5.78 months, 5.73-6.05 months for SCB and 6.54-7.72 months for PASS. Multivariate Cox regression identified older age, workers' compensation status, diabetes, and various tear types (i.e., longitudinal, transverse, bucket handle, complex) as predictors of early clinically significant outcome achievement (hazard ratio: 1.02-24.72), whereas subsequent steroid injection, higher preoperative scores and root and flap tears predicted delays in clinically significant outcome achievement (hazard ratio: 0.12-0.99). CONCLUSIONS: The majority of patients undergoing APM achieve benefit within 6 months of surgery, with diminishing proportions at later timepoints. Important factors for consideration of the the timeline of achieving clinically significant outcome include age, diabetes, workers' compensation, preoperative score, and tear type. The timeline for achieving improvement that was established by this study may aid in setting patient expectations and designing future outcome studies involving APM. STUDY DESIGN: Level IV, Therapeutic Case Series. CI - (c) 2020 by the Arthroscopy Association of North America. Published by Elsevier Inc. FAU - Beletsky, Alexander AU - Beletsky A AD - Department of Orthopedic Surgery, Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, Illinois, U.S.A. FAU - Gowd, Anirudh K AU - Gowd AK AD - Department of Orthopedic Surgery, Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, Illinois, U.S.A. FAU - Liu, Joseph N AU - Liu JN AD - Department of Orthopedic Surgery, Loma Linda Medical Center, Loma Linda, California, U.S.A. FAU - Manderle, Brandon J AU - Manderle BJ AD - Department of Orthopedic Surgery, Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, Illinois, U.S.A. FAU - Yanke, Adam B AU - Yanke AB AD - Department of Orthopedic Surgery, Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, Illinois, U.S.A. FAU - Forsythe, Brian AU - Forsythe B AD - Department of Orthopedic Surgery, Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, Illinois, U.S.A. FAU - Cole, Brian J AU - Cole BJ AD - Department of Orthopedic Surgery, Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, Illinois, U.S.A. FAU - Verma, Nikhil AU - Verma N AD - Department of Orthopedic Surgery, Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, Illinois, U.S.A. LA - eng PT - Journal Article DEP - 20201215 PL - United States TA - Arthrosc Sports Med Rehabil JT - Arthroscopy, sports medicine, and rehabilitation JID - 101765256 PMC - PMC7754524 EDAT- 2020/12/29 06:00 MHDA- 2020/12/29 06:01 PMCR- 2020/12/15 CRDT- 2020/12/28 12:03 PHST- 2019/05/23 00:00 [received] PHST- 2020/06/04 00:00 [accepted] PHST- 2020/12/28 12:03 [entrez] PHST- 2020/12/29 06:00 [pubmed] PHST- 2020/12/29 06:01 [medline] PHST- 2020/12/15 00:00 [pmc-release] AID - S2666-061X(20)30067-5 [pii] AID - 10.1016/j.asmr.2020.06.002 [doi] PST - epublish SO - Arthrosc Sports Med Rehabil. 2020 Dec 15;2(6):e723-e733. doi: 10.1016/j.asmr.2020.06.002. eCollection 2020 Dec.