PMID- 34739960 OWN - NLM STAT- MEDLINE DCOM- 20211207 LR - 20211214 IS - 1873-5800 (Electronic) IS - 0968-0160 (Linking) VI - 33 DP - 2021 Dec TI - Delaying ACL reconstruction beyond 6 months from injury impacts likelihood for clinically significant outcome improvement. PG - 290-297 LID - S0968-0160(21)00252-0 [pii] LID - 10.1016/j.knee.2021.10.010 [doi] AB - BACKGROUND: The effect of surgical latency on outcomes of anterior cruciate ligament reconstruction (ACLR) is a topic that is heavily debated. Some studies report increased benefit when time from injury to surgery is decreased while other studies report no benefit. The purpose of our analysis was to compare achievement of clinically significant outcomes (CSOs) in patients with greater than six months of time from injury to ACLR to those with less than or equal to six months of time to surgery. METHODS: Patients undergoing primary ACLR between January 2017 and January 2018 with minimum one year follow-up were included. International Knee Documentation Committee (IKDC) score and Knee Injury and Osteoarthritis Outcomes Score (KOOS) were collected. Multivariate logistic regression was performed for outcome achievement and risk of revision ACLR and Weibull parametric survival analysis was performed for relative time to outcome achievement. The level of significance was set at alpha = 0.05. RESULTS: 379 patients were included of which, 140 patients sustained ACL injury greater than six months prior to surgery. This group of patients experienced reduced likelihood to achieve patient-acceptable symptomatic state (PASS) on the IKDC (p = 0.03), KOOS Pain (p = 0.01) and a greater likelihood to undergo revision ACLR (p = 0.001). There was no impact of surgical timing on minimal clinically important difference (MCID). CONCLUSION: Patients with greater than 6 months from injury to ACLR reported reduced likelihood to achieve CSOs, delayed achievement of CSOs, and increased rates of revision surgery. CI - Copyright (c) 2021 Elsevier B.V. All rights reserved. FAU - Forsythe, Brian AU - Forsythe B AD - Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, IL, USA. Electronic address: forsythe.research@rushortho.com. FAU - Lu, Yining AU - Lu Y AD - Dept. of Orthopaedic Surgery, Mayo Clinic, Rochester, MN, USA. FAU - Agarwalla, Avinesh AU - Agarwalla A AD - Dept. of Orthopaedic Surgery, Westchester Medical Center, Valhalla, NY, USA. FAU - Ezuma, Chimere O AU - Ezuma CO AD - School of Medicine, Vagelos Columbia College of Physicians and Surgeons, New York, NY, USA. FAU - Patel, Bhavik H AU - Patel BH AD - Dept. of Orthopaedic Surgery, University of Illinois - Chicago, Chicago, IL, USA. FAU - Nwachukwu, Benedict U AU - Nwachukwu BU AD - Dept. of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA. FAU - Beletsky, Alexander AU - Beletsky A AD - Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, IL, USA. FAU - Chahla, Jorge AU - Chahla J AD - Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, IL, USA. FAU - Kym, Craig R AU - Kym CR AD - Dept. of Orthopaedic Surgery, University of Illinois - Chicago, Chicago, IL, USA. FAU - Yanke, Adam B AU - Yanke AB AD - Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, IL, USA. FAU - Cole, Brian J AU - Cole BJ AD - Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, IL, USA. FAU - Bush-Joseph, Charles A AU - Bush-Joseph CA AD - Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, IL, USA. FAU - Bach, Bernard R AU - Bach BR AD - Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, IL, USA. FAU - Verma, Nikhil N AU - Verma NN AD - Midwest Orthopaedics at Rush, Rush University Medical Center, Chicago, IL, USA. LA - eng PT - Journal Article DEP - 20211030 PL - Netherlands TA - Knee JT - The Knee JID - 9430798 SB - IM MH - *Anterior Cruciate Ligament Injuries/surgery MH - *Anterior Cruciate Ligament Reconstruction MH - Cohort Studies MH - Humans MH - Knee Joint/surgery MH - Reoperation OTO - NOTNLM OT - ACL OT - Anterior cruciate ligament OT - Anterior cruciate ligament reconstruction OT - Clinically significant outcomes OT - Patient reported outcome measures COIS- Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2021/11/06 06:00 MHDA- 2021/12/15 06:00 CRDT- 2021/11/05 20:12 PHST- 2021/04/02 00:00 [received] PHST- 2021/10/05 00:00 [revised] PHST- 2021/10/07 00:00 [accepted] PHST- 2021/11/06 06:00 [pubmed] PHST- 2021/12/15 06:00 [medline] PHST- 2021/11/05 20:12 [entrez] AID - S0968-0160(21)00252-0 [pii] AID - 10.1016/j.knee.2021.10.010 [doi] PST - ppublish SO - Knee. 2021 Dec;33:290-297. doi: 10.1016/j.knee.2021.10.010. Epub 2021 Oct 30.