{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,6]],"date-time":"2026-09-06T22:39:55Z","timestamp":1788734395824,"version":"build-2803163510"},"reference-count":37,"publisher":"Wiley","issue":"9","license":[{"start":{"date-parts":[[2024,5,15]],"date-time":"2024-05-15T00:00:00Z","timestamp":1715731200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Knee surg. sports traumatol. arthrosc."],"published-print":{"date-parts":[[2024,9]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>To investigate the risk factors for varus progression after arthroscopic medial meniscal posterior root tear (MMPRT) repair and to compare the clinical outcomes between two groups: one with more varus progression and the other with less varus progression.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Patients who underwent isolated arthroscopic repair of MMPRT between 2015 and 2020 were enroled, and 2\u2010year follow\u2010up data were collected. Participants were categorized into two groups based on preoperative values of the weight\u2010bearing line (WBL) ratio: group A with &lt;5.9% increase and group B with \u22655.9% increase. Various factors, including demographic features and radiological findings, were analysed and compared between the two groups. Intra\u2010meniscal signal intensity, meniscal healing, medial meniscal extrusion (MME), and articular cartilage grade were assessed preoperatively and 1\u2010year postoperatively using coronal magnetic resonance imaging.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The final cohort consisted of 34 patients in group A and 46 in group B, with a mean age of 55.8\u2009\u00b1\u200911.2 and 59.8\u2009\u00b1\u20096.6 years, respectively. Preoperative WBL ratio and cartilage lesions in the medial compartment did not differ between the groups. Preoperative MME were significantly lower in group A than those in group B (2.6\u2009\u00b1\u20090.6\u2009mm in group A and 3.5\u2009\u00b1\u20090.7\u2009mm in group B, <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.05). Patient\u2010reported outcomes at the 2\u2010year follow\u2010up did not differ between the two groups (n. s.). In a logistic analysis, the odds ratio of MME was 2.1 (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.05), and the cutoff value of MME was 3.02\u2009mm.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Preoperative MME is a risk factor for varus progression. However, no differences in patient\u2010reported outcomes were observed at 2\u2010year follow\u2010up, even in the group with greater varus progression.<\/jats:p><\/jats:sec><jats:sec><jats:title>Level of Evidence<\/jats:title><jats:p>Level IV.<\/jats:p><\/jats:sec>","DOI":"10.1002\/ksa.12232","type":"journal-article","created":{"date-parts":[[2024,5,16]],"date-time":"2024-05-16T01:16:38Z","timestamp":1715822198000},"page":"2239-2247","source":"Crossref","is-referenced-by-count":11,"title":["More than 3\u2009mm of preoperative medial meniscal extrusion is identified as a key risk factor for varus progression in limb alignment after arthroscopic repair of medial meniscus posterior root tear"],"prefix":"10.1002","volume":"32","author":[{"given":"Kyoung Ho","family":"Yoon","sequence":"first","affiliation":[{"name":"Department of Orthopaedic Surgery Kyung Hee University Hospital Seoul Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bo Seung","family":"Bae","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery Kyung Hee University Hospital Seoul Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6442-5014","authenticated-orcid":false,"given":"Jun Hyeong","family":"Ahn","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery Pohang St. Mary's Hospital Pohang\u2010si Gyeongsangbuk\u2010do Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3908-8308","authenticated-orcid":false,"given":"Sung Hyun","family":"Hwang","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery Pohang St. Mary's Hospital Pohang\u2010si Gyeongsangbuk\u2010do Republic of 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