{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,9]],"date-time":"2026-03-09T12:49:41Z","timestamp":1773060581266,"version":"3.50.1"},"reference-count":54,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2024,5,20]],"date-time":"2024-05-20T00:00:00Z","timestamp":1716163200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JCM"],"abstract":"<jats:p>Objectives: Although acute anterior cruciate ligament reconstruction (ACLR) is often avoided because of postoperative joint stiffness, delayed ACLR can lead to a longer recovery time and can have a negative impact on physical function due to detraining. This study aimed to determine the effects of acute ACLR on postoperative outcomes, including muscle strength, performance, and return to sports. Methods: A total of 110 patients who underwent anatomical ACLR using hamstring autografts were included in this study and were divided into three groups: acute (ACLR performed within 2 weeks after ACL injury), 2\u20136 weeks (ACLR performed between 2 and 6 weeks after injury), and 6\u201312 weeks (ACLR performed between 6 and 12 weeks after injury). Several parameters were evaluated, including range of motion, knee joint stability, isokinetic knee strength, performance, and return to sports. Results: No significant differences were found in the range of motion or knee joint stability between the groups. The acute group exhibited significantly greater quadriceps strength at 3 months postoperatively than the other groups (p &lt; 0.05). The single-leg hop test showed that 66.7%, 38.7%, and 33.3% of the patients in the acute, 2\u20136 weeks, and 6\u201312 weeks groups, respectively, recovered to an LSI of 90% or greater (p = 0.09, Cramer\u2019s V = 0.27). All patients in the acute group were able to return to sports (p = 0.14; Cramer\u2019s V = 0.28). Conclusions: Acute ACLR is advantageous for the early recovery of strength and performance without adverse events. Acute ACLR may shorten the time spent away from sports activities.<\/jats:p>","DOI":"10.3390\/jcm13102994","type":"journal-article","created":{"date-parts":[[2024,5,20]],"date-time":"2024-05-20T06:31:58Z","timestamp":1716186718000},"page":"2994","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Impact of Surgical Timing on Functional Outcomes after Anterior Cruciate Ligament Reconstruction"],"prefix":"10.3390","volume":"13","author":[{"given":"Tatsuhiro","family":"Kawashima","sequence":"first","affiliation":[{"name":"Department of Rehabilitation, Ichihara Hospital, Tsukuba 300-3295, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hirotaka","family":"Mutsuzaki","sequence":"additional","affiliation":[{"name":"Center for Medical Science, Ibaraki Prefectural University of Health Sciences, Ami 300-0394, Japan"},{"name":"Department of Orthopedic Surgery, Ibaraki Prefectural University of Health Sciences Hospital, Ami 300-0331, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Arata","family":"Watanabe","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Ichihara Hospital, Tsukuba 300-3295, Japan"},{"name":"Department of Orthopedic Surgery, University of Tsukuba, Tsukuba 305-8575, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kotaro","family":"Ikeda","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Ichihara Hospital, Tsukuba 300-3295, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yuki","family":"Yamanashi","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Aichi Medical University, Nagakute 480-1195, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tomonori","family":"Kinugasa","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Ichihara Hospital, Tsukuba 300-3295, Japan"},{"name":"Department of Orthopedic Surgery, University of Tsukuba, Tsukuba 305-8575, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2024,5,20]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"509","DOI":"10.4085\/1062-6050-45.5.509","article-title":"Anterior cruciate ligament injuries in the prepubescent and adolescent athlete: Clinical and research considerations","volume":"45","author":"Wojtys","year":"2010","journal-title":"J. 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