{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,31]],"date-time":"2026-10-31T02:21:08Z","timestamp":1793413268475,"version":"4.5.0"},"reference-count":38,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2018,2,21]],"date-time":"2018-02-21T00:00:00Z","timestamp":1519171200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal Orthopaedic Research"],"published-print":{"date-parts":[[2018,7]]},"abstract":"<jats:title>ABSTRACT<\/jats:title><jats:sec><jats:label\/><jats:p>This study aimed to evaluate the relationship between preoperative lateral meniscal extrusion (LME) and arthroscopic findings of lateral meniscus posterior root tear (LMPRT) in knees with anterior cruciate ligament (ACL) tear. Thirty\u2010five knees that had LMPRTs with concomitant ACL tears on arthroscopy were evaluated. Patients were divided into two groups, partial and complete root tears, via arthroscopic findings at the time of ACL reconstruction. For comparison, we added two groups, using the same database; 20 normal knees (normal group) and 20 ACL\u2010injured knees without LM injury (intact LM group). We retrospectively measured preoperative LMEs using magnetic resonance imaging (MRI). Twenty\u2010three knees had partial LMPRTs. Complete LMPRTs were observed in 12 knees. The average LME was \u22120.1\u2009\u00b1\u20090.4\u2009mm in the normal group, 0.2\u2009\u00b1\u20090.5\u2009mm in the intact LM group, 0.4\u2009\u00b1\u20090.8\u2009mm in the partial LMPRT group, and 2.0\u2009\u00b1\u20090.6\u2009mm in the complete LMPRT group. A significant difference in preoperative LMEs was observed between the complete LMPRT group and the other groups (<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.001). The receiver operating curve analysis, which distinguishes a partial tear from a complete tear, identified an optimal cut\u2010off point of 1.1\u2009mm for preoperative LME. This LME cut\u2010off had a sensitivity of 100% and specificity of 83% for complete LMPRT. We found that preoperative LMEs were larger in complete LMPRTs associated with ACL injuries than in partial LMPRTs. Our results suggest that preoperative MRI\u2010detected LME may be a useful indicator for estimating LMPRT severity in ACL\u2010injured knees. Level of evidence: Retrospective comparative study level IV. \u00a9 2018 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 36:1894\u20131900, 2018.<\/jats:p><\/jats:sec>","DOI":"10.1002\/jor.23861","type":"journal-article","created":{"date-parts":[[2018,1,25]],"date-time":"2018-01-25T12:30:04Z","timestamp":1516883404000},"page":"1894-1900","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":36,"title":["Complete tear of the lateral meniscus posterior root is associated with meniscal extrusion in anterior cruciate ligament deficient knees"],"prefix":"10.1002","volume":"36","author":[{"given":"Yusuke","family":"Kamatsuki","sequence":"first","affiliation":[{"name":"Department of Orthopaedic Surgery Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences 2\u20105\u20101 Shikatacho Kitaku Okayama 700\u20108558 Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Takayuki","family":"Furumatsu","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences 2\u20105\u20101 Shikatacho Kitaku Okayama 700\u20108558 Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Masataka","family":"Fujii","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences 2\u20105\u20101 Shikatacho Kitaku Okayama 700\u20108558 Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuya","family":"Kodama","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences 2\u20105\u20101 Shikatacho Kitaku Okayama 700\u20108558 Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shinichi","family":"Miyazawa","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences 2\u20105\u20101 Shikatacho Kitaku Okayama 700\u20108558 Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tomohito","family":"Hino","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences 2\u20105\u20101 Shikatacho Kitaku Okayama 700\u20108558 Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Toshifumi","family":"Ozaki","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences 2\u20105\u20101 Shikatacho Kitaku Okayama 700\u20108558 Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2018,2,21]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1177\/0363546508323254"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.1111\/joa.12265"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.1136\/ard.2004.023796"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.G.00748"},{"key":"e_1_2_9_6_1","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.L.01252"},{"key":"e_1_2_9_7_1","doi-asserted-by":"publisher","DOI":"10.1177\/0363546512458574"},{"key":"e_1_2_9_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.arthro.2015.08.040"},{"key":"e_1_2_9_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jos.2016.04.016"},{"key":"e_1_2_9_10_1","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.69B1.3818740"},{"key":"e_1_2_9_11_1","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.82B2 .9363"},{"key":"e_1_2_9_12_1","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.68B2.3754260"},{"key":"e_1_2_9_13_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.arthro.2014.02.040"},{"key":"e_1_2_9_14_1","doi-asserted-by":"publisher","DOI":"10.1148\/radiol.2393050559"},{"key":"e_1_2_9_15_1","doi-asserted-by":"publisher","DOI":"10.2214\/AJR.08.1300"},{"key":"e_1_2_9_16_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-014-2904-x"},{"key":"e_1_2_9_17_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-014-3467-6"},{"key":"e_1_2_9_18_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-014-3073-7"},{"key":"e_1_2_9_19_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-014-3280-2"},{"key":"e_1_2_9_20_1","doi-asserted-by":"publisher","DOI":"10.1177\/0363546514563910"},{"key":"e_1_2_9_21_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-014-3395-5"},{"key":"e_1_2_9_22_1","doi-asserted-by":"publisher","DOI":"10.1177\/0363546513506551"},{"key":"e_1_2_9_23_1","doi-asserted-by":"publisher","DOI":"10.1177\/0363546514559684"},{"key":"e_1_2_9_24_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00776-012-0334-5"},{"key":"e_1_2_9_25_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00264-015-2704-z"},{"key":"e_1_2_9_26_1","doi-asserted-by":"publisher","DOI":"10.1002\/jor.23450"},{"key":"e_1_2_9_27_1","doi-asserted-by":"publisher","DOI":"10.1177\/2325967116639895"},{"key":"e_1_2_9_28_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00264-013-2238-1"},{"key":"e_1_2_9_29_1","first-page":"441","article-title":"Concurrent lateral meniscal repair with anterior cruciate ligament reconstruction induces the extrusion of the lateral meniscus: assessments of magnetic resonance images","volume":"70","author":"Kashihara N","year":"2016","journal-title":"Acta Med Okayama"},{"key":"e_1_2_9_30_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.arthro.2009.01.014"},{"key":"e_1_2_9_31_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.arthro.2011.06.032"},{"key":"e_1_2_9_32_1","doi-asserted-by":"publisher","DOI":"10.1055\/s-0033-1341578"},{"key":"e_1_2_9_33_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-011-1794-4"},{"key":"e_1_2_9_34_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-014-3321-x"},{"key":"e_1_2_9_35_1","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.84B6.13110"},{"key":"e_1_2_9_36_1","doi-asserted-by":"publisher","DOI":"10.1177\/0363546506287825"},{"key":"e_1_2_9_37_1","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.79B2.6893"},{"key":"e_1_2_9_38_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-015-3742-1"},{"key":"e_1_2_9_39_1","doi-asserted-by":"publisher","DOI":"10.2214\/AJR.15.14816"}],"container-title":["Journal of Orthopaedic Research"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Fjor.23861","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/jor.23861","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,9,17]],"date-time":"2023-09-17T19:15:39Z","timestamp":1694978139000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/jor.23861"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2018,2,21]]},"references-count":38,"journal-issue":{"issue":"7","published-print":{"date-parts":[[2018,7]]}},"alternative-id":["10.1002\/jor.23861"],"URL":"https:\/\/doi.org\/10.1002\/jor.23861","archive":["Portico"],"relation":{},"ISSN":["0736-0266","1554-527X"],"issn-type":[{"value":"0736-0266","type":"print"},{"value":"1554-527X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2018,2,21]]},"assertion":[{"value":"2017-04-18","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2018-01-15","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2018-02-21","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}