{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T14:43:05Z","timestamp":1787755385361,"version":"build-2784847793"},"reference-count":12,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"2","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>We describe a case of Hegemann's disease in a 10-year-old boy practicing karate. The disease was discovered by chance when evaluating a traumatic olecranon fracture. Radiography showed not only olecranon fracture but also a shortening of the epiphysis of the humeral trochlea and a segmental lesion with sclerosis. The trochlea lesion was considered asymptomatic Hegemann's disease. After the olecranon healed conservatively, the patient resumed karate activities and underwent follow-up radiography. The trochlea lesion gradually normalized after 2 years without symptoms.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions:<\/jats:title>\n                    <jats:p>Regardless of the initial alarming radiographic findings, the lesion gradually healed, and the patient was able to return to sports activities.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.2106\/jbjs.cc.21.00616","type":"journal-article","created":{"date-parts":[[2022,7,21]],"date-time":"2022-07-21T17:00:20Z","timestamp":1658422820000},"update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":0,"title":["Hegemann's Disease Detected with a Traumatic Olecranon Fracture"],"prefix":"10.2106","volume":"12","author":[{"given":"Takaki","family":"Morito","sequence":"first","affiliation":[{"name":"Department of Orthopedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6604-3797","authenticated-orcid":false,"given":"Yoshikazu","family":"Kida","sequence":"additional","affiliation":[{"name":"Department of Orthopedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1466-0160","authenticated-orcid":false,"given":"Kenta","family":"Takatsuji","sequence":"additional","affiliation":[{"name":"Department of Orthopedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8617-9798","authenticated-orcid":false,"given":"Yusei","family":"Katsuyama","sequence":"additional","affiliation":[{"name":"Department of Orthopedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kenji","family":"Takahashi","sequence":"additional","affiliation":[{"name":"Department of Orthopedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"276","published-online":{"date-parts":[[2022,4]]},"reference":[{"key":"bib1-20240805","doi-asserted-by":"crossref","first-page":"89","DOI":"10.1055\/s-0029-1231968","article-title":"Die spontanen aseptischen Knochen-nekrosen des ellbogengelenkes [in German]","volume":"75","author":"Hegemann","year":"1951","journal-title":"Fortscher Rontgenstr."},{"key":"bib2-20240805","doi-asserted-by":"crossref","first-page":"45","DOI":"10.1007\/BF00431365","article-title":"Aseptic osteonecrosis of the humeral trochlea (Hegemann's disease)","volume":"110","author":"Beyer","year":"1990","journal-title":"Arch Orthop Trauma Surg."},{"issue":"2","key":"bib3-20240805","doi-asserted-by":"crossref","first-page":"201","DOI":"10.1097\/01241398-200403000-00013","article-title":"Growth disturbance in aseptic osteonecrosis of the humeral trochlea (Hegemann's Disease): a case report with developmental distal radioulnar joint incongruency","volume":"24","author":"Ito","year":"2004","journal-title":"J Pediatr Orthop."},{"issue":"4","key":"bib4-20240805","first-page":"340","article-title":"A case of bilateral juvenile osteochondritis of the trochlea humeri [in German]","volume":"70","author":"Szepesi","year":"1971","journal-title":"Arch Orthop Trauma Surg."},{"issue":"5","key":"bib5-20240805","first-page":"261","article-title":"Aseptic necrosis of the trochlea of the humerus (Hegemann disease)","volume":"31","author":"Martin","year":"1984","journal-title":"Beitr Orthop Traumatol."},{"issue":"2","key":"bib6-20240805","first-page":"46","article-title":"A case of aseptic osteonecrosis of the humeral trochlea (Hegemann's disease); evaluation by MRI [in Japanese]","volume":"25","author":"Isobe","year":"2018","journal-title":"J Jpn Elbow Soc."},{"issue":"1","key":"bib7-20240805","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1007\/s11832-014-0630-z","article-title":"Hegemann's disease and fishtail deformity: aetiopathogenesis, radiographic appearance and clinical outcome","volume":"9","author":"Claessen","year":"2015","journal-title":"J Child Orthop."},{"issue":"2","key":"bib8-20240805","doi-asserted-by":"crossref","first-page":"248","DOI":"10.3171\/jns.1986.64.2.0248","article-title":"Biomechanical study of full-contact karate contrasted with boxing","volume":"64","author":"Schwartz","year":"1986","journal-title":"J Neurosurg."},{"issue":"12","key":"bib9-20240805","doi-asserted-by":"crossref","first-page":"1004","DOI":"10.1136\/bjsm.2007.040618","article-title":"Acute pseudoaneurysm of the femoral artery after repeated trauma in full-contact karate practice","volume":"42","author":"Doiz","year":"2008","journal-title":"Br J Sports Med."},{"issue":"4","key":"bib10-20240805","doi-asserted-by":"crossref","first-page":"765","DOI":"10.1302\/0301-620X.40B4.765","article-title":"The ossification and vascularization of the tarsal navicular and their relation to Kohler's disease","volume":"40B","author":"Waugh","year":"1958","journal-title":"J Bone Joint Surg Br."},{"issue":"4","key":"bib11-20240805","doi-asserted-by":"crossref","first-page":"458","DOI":"10.1016\/0266-7681_88_90180-5","article-title":"Classification of fresh fractures of the lunate","volume":"13","author":"Teisen","year":"1988","journal-title":"J Hand Surg Br."},{"issue":"9","key":"bib13-20240805","doi-asserted-by":"crossref","first-page":"2167","DOI":"10.1177\/0363546519855036","article-title":"Osteochondritis Dissecans of the Humeral Trochlea: characterization of a rare disorder based on 28 cases","volume":"47","author":"Wang","year":"2019","journal-title":"Am J Sports Med."}],"container-title":["JBJS Case Connector"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.ovid.com\/10.2106\/JBJS.CC.21.00616","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T13:42:17Z","timestamp":1787751737000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.ovid.com\/10.2106\/JBJS.CC.21.00616"}},"subtitle":["A Case Report"],"short-title":[],"issued":{"date-parts":[[2022,4]]},"references-count":12,"journal-issue":{"issue":"2","published-online":{"date-parts":[[2022]]}},"URL":"https:\/\/doi.org\/10.2106\/jbjs.cc.21.00616","relation":{},"ISSN":["2160-3251"],"issn-type":[{"value":"2160-3251","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,4]]}}}