{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,4]],"date-time":"2026-09-04T11:13:03Z","timestamp":1788520383903,"version":"build-2803163510"},"reference-count":19,"publisher":"Wiley","issue":"9","license":[{"start":{"date-parts":[[2022,8,1]],"date-time":"2022-08-01T00:00:00Z","timestamp":1659312000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Orthopaedic Surgery"],"published-print":{"date-parts":[[2022,9]]},"abstract":"<jats:sec><jats:title>Background<\/jats:title><jats:p>Complete discoid medial meniscus is an extremely rare abnormality of the knee joint whose meniscus has a discoid shape rather than a normal semilunar one. Several medial meniscus anomalies including anomalous insertion have been reported in the literature. This report presents a rare case of symptomatic complete discoid medial meniscus whose anterolateral (apical) portion was completely coalesced with the ACL. MRI, radiographic, and arthroscopic findings in the medial compartment are to be submitted.<\/jats:p><\/jats:sec><jats:sec><jats:title>Case Presentation<\/jats:title><jats:p>A 29\u2010year\u2010old male presented with intermittent pain and swelling of the right knee for 2\u2009years. Based on radiographic, MRI, and physical examination findings, he was diagnosed with discoid medial meniscus tears. Arthroscopic saucerization was performed for the torn discoid medial meniscus of the right knee. Arthroscopic examination revealed a complete discoid medial meniscus and the anterolateral (apical) portion of which was completely coalesced with the ACL. Careful Probing of the meniscal surface revealed there was a longitudinal tear extending from the tibial spine to the midportion of the meniscus. Arthroscopic saucerization of the discoid meniscus was performed after closely cutting the meniscus around the ACL. The patient reported no symptoms, and he had returned to his daily and sports activities, including football, basketball, and jogging, at the 12\u2010month follow\u2010up.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Complete discoid medial meniscus is an extremely rare abnormality, and this case presents the third complete discoid medial meniscus whose anterolateral (apical) portion was completely coalesced with the ACL. The current case we present strongly supports the hypothesis that ACL and meniscus were differentiated from the same mesenchyme.<\/jats:p><\/jats:sec>","DOI":"10.1111\/os.13377","type":"journal-article","created":{"date-parts":[[2022,8,1]],"date-time":"2022-08-01T12:53:35Z","timestamp":1659358415000},"page":"2391-2395","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Symptomatic Complete Discoid Medial Meniscus Completely Coalesced with the Anterior Cruciate Ligament: A Case Report and Literature Review"],"prefix":"10.1111","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8415-9171","authenticated-orcid":false,"given":"Guorong","family":"Jin","sequence":"first","affiliation":[{"name":"Center for Traumatology, Ninth People's Hospital of Chongqing  Chongqing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tong","family":"Xin","sequence":"additional","affiliation":[{"name":"Chongqing Key Laboratory of Translational Research for Cancer Metastasis and Individualized Treatment Chongqing University Cancer Hospital  Chongqing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zheng","family":"Weng","sequence":"additional","affiliation":[{"name":"Center for Traumatology, Ninth People's Hospital of Chongqing  Chongqing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yun","family":"Zhu","sequence":"additional","affiliation":[{"name":"Center for Traumatology, Ninth People's Hospital of Chongqing  Chongqing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hao","family":"Qiu","sequence":"additional","affiliation":[{"name":"Center for Traumatology, Ninth People's Hospital of Chongqing  Chongqing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dun","family":"Liu","sequence":"additional","affiliation":[{"name":"Center for Traumatology, Ninth People's Hospital of Chongqing  Chongqing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shimou","family":"Chen","sequence":"additional","affiliation":[{"name":"Center for Traumatology, Ninth People's Hospital of Chongqing  Chongqing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jiangtao","family":"Dong","sequence":"additional","affiliation":[{"name":"Department of Joint Surgery the Third Hospital of Hebei Medical University  Shijiazhuang China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fang","family":"Huang","sequence":"additional","affiliation":[{"name":"Department of Respiratory Medicine Ninth Peoples's Hospital of Chongqing  Chongqing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yu","family":"Chen","sequence":"additional","affiliation":[{"name":"Center for Traumatology, Ninth People's Hospital of Chongqing  Chongqing China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2022,8]]},"reference":[{"key":"e_1_2_12_2_1","first-page":"179","article-title":"The external semilunar cartilage as a complete disc","volume":"1","author":"Young RB","year":"1889","journal-title":"Mem. 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