{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T14:39:45Z","timestamp":1787755185325,"version":"build-2784847793"},"reference-count":6,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"4","content-domain":{"domain":["lww.com","ovid.com"],"crossmark-restriction":true},"short-container-title":[],"abstract":"<jats:sec>\n                    <jats:title>Case:<\/jats:title>\n                    <jats:p>A 13-year-old boy sustained an acute, grade III medial collateral ligament (MCL) distal periosteal avulsion injury while playing noncontact football. Treatment consisted of diagnostic knee arthroscopy with open physeal-sparing MCL repair. At approximately 1-year follow-up, new development of genu valgum in the operative extremity was noted. After 8 months of nonoperative treatment with deformity progression, the patient underwent correction with proximal medial tibial hemiepiphysiodesis.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>Although Cozen's phenomenon commonly occurs after a proximal metaphyseal tibial fracture in children aged 2 to 7 years, it can occur as a rare complication of MCL injury\/repair and remains a possible outcome in skeletally immature patients.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.2106\/jbjs.cc.21.00481","type":"journal-article","created":{"date-parts":[[2021,10,29]],"date-time":"2021-10-29T16:00:07Z","timestamp":1635523207000},"update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":3,"title":["Cozen's Phenomenon After Repair of a Medial Collateral Ligament Periosteal Avulsion in a Pediatric Athlete"],"prefix":"10.2106","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4537-2380","authenticated-orcid":false,"given":"Taylor E.","family":"Hobson","sequence":"first","affiliation":[{"name":"Department of Orthopaedics, University of Utah, Salt Lake City, Utah"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8701-9913","authenticated-orcid":false,"given":"Alexander J.","family":"Mortensen","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics, University of Utah, Salt Lake City, Utah"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Allan K.","family":"Metz","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics, University of Utah, Salt Lake City, Utah"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6940-9865","authenticated-orcid":false,"given":"Stephen K.","family":"Aoki","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics, University of Utah, Salt Lake City, Utah"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"276","published-online":{"date-parts":[[2021,10]]},"reference":[{"key":"bib1-20240805","first-page":"3","article-title":"The incidence of knee ligament injuries in the general population","volume":"4","author":"Miyasaka","year":"1991","journal-title":"Am J Knee Surg."},{"key":"bib2-20240805","doi-asserted-by":"crossref","first-page":"691","DOI":"10.1016\/j.csm.2011.07.004","article-title":"Youth sports anterior cruciate ligament and knee injury epidemiology: who is getting injurws? In what sports? When?","volume":"30","author":"Shea","year":"2011","journal-title":"Clin Sports Med."},{"key":"bib3-20240805","first-page":"183","article-title":"Fracture of the proximal portion of the tibia in children followed by valgus deformity","volume":"97","author":"Cozen","year":"1953","journal-title":"Surg Gynecol Obstet."},{"issue":"3","key":"bib4-20240805","doi-asserted-by":"crossref","first-page":"e10","DOI":"10.1177\/0036933013496922","article-title":"Cozen's phenomenon: a reminder","volume":"58","author":"Dorman","year":"2013","journal-title":"Scott Med J."},{"issue":"2","key":"bib6-20240805","doi-asserted-by":"crossref","first-page":"87","DOI":"10.1007\/s11751-018-0309-y","article-title":"Cozen's deformity: resolved by guided growth","volume":"13","author":"Morin","year":"2018","journal-title":"Strategies Trauma Limb Reconstr."},{"issue":"2","key":"bib7-20240805","doi-asserted-by":"crossref","first-page":"e109","DOI":"10.1097\/BPO.0000000000001398","article-title":"Anatomic dissection and CT imaging of the anterior cruciate and medial collateral ligament footprint anatomy in skeletally immature cadaver knees","volume":"40","author":"Shea","year":"2020","journal-title":"J Pediatr Orthop."}],"container-title":["JBJS Case Connector"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.ovid.com\/10.2106\/JBJS.CC.21.00481","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T13:38:54Z","timestamp":1787751534000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.ovid.com\/10.2106\/JBJS.CC.21.00481"}},"subtitle":["A Case Report"],"short-title":[],"issued":{"date-parts":[[2021,10]]},"references-count":6,"journal-issue":{"issue":"4","published-online":{"date-parts":[[2021]]}},"URL":"https:\/\/doi.org\/10.2106\/jbjs.cc.21.00481","relation":{},"ISSN":["2160-3251"],"issn-type":[{"value":"2160-3251","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,10]]}}}