{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,9]],"date-time":"2026-03-09T21:36:13Z","timestamp":1773092173860,"version":"3.50.1"},"reference-count":13,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"12","license":[{"start":{"date-parts":[[2013,1,1]],"date-time":"2013-01-01T00:00:00Z","timestamp":1356998400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2013,9,20]],"date-time":"2013-09-20T00:00:00Z","timestamp":1379635200000},"content-version":"vor","delay-in-days":262,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/3.0\/"}],"content-domain":{"domain":["lww.com","ovid.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2013,1]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>INTRODUCTION:<\/jats:title>\n                    <jats:p>The ring-shaped lateral meniscus is very rare. Although it is essentially known as a congenital anomaly, a central tear in an incomplete discoid meniscus or an old bucket-handle tear in a meniscus may be easily mistaken for a ring-shaped meniscus. We experienced a ring-shaped lateral meniscus that regenerated after partial resection of a discoid meniscus together with anterior cruciate ligament (ACL) reconstruction.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>PRESENTATION OF CASE:<\/jats:title>\n                    <jats:p>A 37-year-old female patient still experienced unrelenting knee pain 6 months after ACL reconstruction and partial meniscectomy of a discoid lateral meniscus. A repeat arthroscopy was performed. The lateral tibial plateau was covered in the form of a ring by meniscus-like tissue. The meniscus-like tissue appeared to have regenerated inward toward the center from the stump after the partial meniscectomy and was connected from the anterior to posterior horn, forming an interhorn bridge. Partial meniscectomy was repeated. Histologically, the regenerated tissue was not meniscal, but comprised mature fibrocartilage; macroscopically; however, it was very similar to meniscal tissue. Two years after the initial operation, the patient had no complaints and experienced full return of function.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>DISCUSSION:<\/jats:title>\n                    <jats:p>The reason for such regeneration is unknown, but may have been attributed to the specific intra-articular environment that developed after the ACL reconstruction.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>CONCLUSION:<\/jats:title>\n                    <jats:p>This is the first report of regenerative development of a ring-shaped lateral meniscus. When a ring-shaped lateral meniscus is diagnosed, we must accurately determine whether it is a true congenital anomaly in consideration of the present case.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1016\/j.ijscr.2013.08.023","type":"journal-article","created":{"date-parts":[[2013,9,25]],"date-time":"2013-09-25T01:20:53Z","timestamp":1380072053000},"page":"1093-1096","update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":11,"title":["Regeneration of ring-shaped lateral meniscus after partial resection of discoid meniscus with anterior cruciate ligament reconstruction"],"prefix":"10.1097","volume":"4","author":[{"given":"Takashi","family":"Soejima","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tomonoshin","family":"Kanazawa","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kousuke","family":"Tabuchi","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kouji","family":"Noguchi","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Takashi","family":"Inoue","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hidetaka","family":"Murakami","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"276","reference":[{"key":"R1-12-20260114","first-page":"9","article-title":"Specimen of internal semilunar cartilage as a complete disc","volume":"23","author":"Watson-Jones","year":"1930","journal-title":"Proc R Soc Med"},{"key":"R2-12-20260114","doi-asserted-by":"crossref","first-page":"6","DOI":"10.2106\/00004623-197557080-00029","article-title":"Congenital absence of the anterior cruciate ligament associated with a ring meniscus","volume":"57","author":"Noble","year":"1975","journal-title":"J Bone Joint Surg Am"},{"key":"R3-12-20260114","first-page":"9","article-title":"A ring-shaped medial semilunar cartilage","volume":"34","author":"Basmajiian","year":"1952","journal-title":"J Bone Joint Surg Br"},{"key":"R4-12-20260114","first-page":"9","article-title":"Discoid medial meniscus","volume":"169","author":"Johnson","year":"1982","journal-title":"Clin Orthop"},{"key":"R5-12-20260114","doi-asserted-by":"crossref","first-page":"4","DOI":"10.1053\/jars.2000.8244","article-title":"Symptomatic ring-shaped lateral meniscus","volume":"16","author":"Arnold","year":"2000","journal-title":"Arthroscopy"},{"key":"R6-12-20260114","doi-asserted-by":"crossref","first-page":"4","DOI":"10.1016\/S0749-8063(88)80029-X","article-title":"Discoid lateral menisci: a report of 29 cases","volume":"4","author":"Albertsson","year":"1988","journal-title":"Arthroscopy"},{"key":"R7-12-20260114","doi-asserted-by":"crossref","first-page":"7","DOI":"10.1016\/j.bbrc.2009.12.044","article-title":"Anterior cruciate ligament-derived cells have high chondrogenic potential","volume":"391","author":"Furumatsu","year":"2010","journal-title":"Biochem Biophys Res Commun"},{"key":"R8-12-20260114","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1007\/s00167-011-1536-7","article-title":"Double-layered lateral meniscus","volume":"19","author":"Wang","year":"2011","journal-title":"Knee Surg Sports Traumatol Arthrosc"},{"key":"R9-12-20260114","doi-asserted-by":"crossref","first-page":"3","DOI":"10.1007\/s00167-002-0292-0","article-title":"Symptomatic ring-shaped lateral meniscus: magnetic resonance imaging and arthroscopy","volume":"10","author":"Atay","year":"2002","journal-title":"Knee Surg Sports Traumatol Arthrosc"},{"key":"R10-12-20260114","first-page":"8","article-title":"Isolated lateral ring meniscus. Case report","volume":"8","author":"D\u2019Lima","year":"1995","journal-title":"Am J Knee Surg"},{"key":"R11-12-20260114","doi-asserted-by":"crossref","first-page":"9","DOI":"10.1016\/0749-8063(95)90120-5","article-title":"A ring-shaped lateral meniscus","volume":"11","author":"Kim","year":"1995","journal-title":"Arthroscopy"},{"key":"R12-12-20260114","first-page":"5","article-title":"Ring meniscus mistaken for incomplete discoid menis-cus: a case report and review of literature","volume":"18","author":"Pandy","year":"2010","journal-title":"Knee Surg Sports Traumatol Arthrosc"},{"key":"R13-12-20260114","doi-asserted-by":"crossref","first-page":"6","DOI":"10.1007\/s00167-005-0629-6","article-title":"An arthroscopic analysis of lateral meniscal variants and a com-parison with MRI findings","volume":"14","author":"Kim","year":"2006","journal-title":"Knee Surg Sports Traumatol Arthrosc"}],"container-title":["International Journal of Surgery Case Reports"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S2210261213002903?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S2210261213002903?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.lww.com\/01612930-201304120-00012","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,1,14]],"date-time":"2026-01-14T13:19:23Z","timestamp":1768396763000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.lww.com\/01612930-201304120-00012"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2013,1]]},"references-count":13,"journal-issue":{"issue":"12","published-print":{"date-parts":[[2013]]}},"URL":"https:\/\/doi.org\/10.1016\/j.ijscr.2013.08.023","relation":{},"ISSN":["2210-2612"],"issn-type":[{"value":"2210-2612","type":"print"}],"subject":[],"published":{"date-parts":[[2013,1]]}}}