{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,4]],"date-time":"2026-05-04T00:04:18Z","timestamp":1777853058537,"version":"3.51.4"},"reference-count":18,"publisher":"SAGE Publications","issue":"11","license":[{"start":{"date-parts":[[2025,6,12]],"date-time":"2025-06-12T00:00:00Z","timestamp":1749686400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["J Hand Surg Eur Vol"],"published-print":{"date-parts":[[2025,12]]},"abstract":"<jats:p>\n                    This study aimed to evaluate the radiographic characteristics of the epiphyses (secondary ossification centres) in patients with radial polydactyly (RP). Radiographs of 2108 children with RP (2300 thumbs) were retrospectively reviewed. The pathoanatomy of the polydactyly was correlated with the radiographic characteristics of the epiphyseal ossification centres on plain radiographs and compared with the normal children population. The epiphyses of the thumb in patients with RP ossify sequentially from the distal phalanx, proximal phalanx and metacarpal (26 months, 36 months and 37 months, respectively), and their appearance is delayed compared with children with normal anatomy (15 months, 18 months and 25 months, respectively) (\n                    <jats:italic toggle=\"yes\">p<\/jats:italic>\n                    \u2009&lt;\u20090.001). Anatomical features, gender, polydactyly degree and age were found to be associated with epiphyseal ossification of the thumb in general. However, anatomic features of polydactyly such as ulnar deviation of the interphalangeal joint were found to correlate with atypical distal phalanx epiphyses in 5.5% of cases, which may delay surgery until the thumb is large enough for corrective osteotomy in cases of hypertrophic epiphysis.\n                  <\/jats:p>\n                  <jats:p>\n                    <jats:bold>Level of evidence:<\/jats:bold>\n                    III\n                  <\/jats:p>","DOI":"10.1177\/17531934251348379","type":"journal-article","created":{"date-parts":[[2025,6,12]],"date-time":"2025-06-12T04:47:19Z","timestamp":1749703639000},"page":"1523-1530","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["Radiographic characteristics of epiphyseal ossification centres of the thumb in patients with radial polydactyly"],"prefix":"10.1177","volume":"50","author":[{"given":"JianPing","family":"Wu","sequence":"first","affiliation":[{"name":"Department of Pediatric Orthopaedics, GuangZhou Women and Children\u2019s Medical Center, GuangZhou Medical University, Guangdong Provincial Clinical Research Center for Child Health, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"ShiJie","family":"Liao","sequence":"additional","affiliation":[{"name":"Department of Orthopedics, The First Affiliated Hospital of Guangxi Medical University, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hai","family":"Zhao","sequence":"additional","affiliation":[{"name":"Department of Pediatric Orthopedic, ChenZhou No.1 People\u2019s Hospital, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"YuanZhong","family":"Liu","sequence":"additional","affiliation":[{"name":"Department of Pediatric Orthopaedics, GuangZhou Women and Children\u2019s Medical Center, GuangZhou Medical University, Guangdong Provincial Clinical Research Center for Child Health, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Federico","family":"Canavese","sequence":"additional","affiliation":[{"name":"Department of Orthopedic and Traumatology, IRCCS Istituto Giannina Gaslini, Via Gerolamo Gaslini 5, Genoa, Italy"},{"name":"DISC-Dipartimento di scienze chirurgiche e diagnostiche integrate, University of Genova, Viale Benedetto XV No. 6, Genova, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0001-6186-8255","authenticated-orcid":false,"given":"HongWen","family":"Xu","sequence":"additional","affiliation":[{"name":"Department of Pediatric Orthopaedics, GuangZhou Women and Children\u2019s Medical Center, GuangZhou Medical University, Guangdong Provincial Clinical Research Center for Child Health, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2025,6,12]]},"reference":[{"key":"e_1_3_7_2_1","first-page":"15","volume-title":"Tachdjian\u2019s Pediatric Orthopaedics","author":"Herring JA.","year":"2014","unstructured":"Herring JA. 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Chin J Hand Surg. 2014, 30: 169\u201371.","journal-title":"Chin J Hand Surg"},{"key":"e_1_3_7_9_1","article-title":"Analysis of causes for congenital ulnar deviated thumbs at the distal phalanx level in 157 thumbs","volume":"10","author":"Tian XF","year":"2019","unstructured":"Tian XF, Chan PT, Li AQ, Xiao J, Chen W, Chim H. Analysis of causes for congenital ulnar deviated thumbs at the distal phalanx level in 157 thumbs. J Hand Surg Am. 2019, 10: 860\u20137.","journal-title":"J Hand Surg Am"},{"key":"e_1_3_7_10_1","doi-asserted-by":"publisher","DOI":"10.4055\/cios.2012.4.1.1"},{"key":"e_1_3_7_11_1","doi-asserted-by":"publisher","DOI":"10.1055\/s-0036-1593736"},{"key":"e_1_3_7_12_1","first-page":"28","volume-title":"Praktische anatomie","author":"Von Lanz T","year":"1938","unstructured":"Von Lanz T, Wachsmuth W. Praktische anatomie. Berlin, Julius Springer, 1938: 28."},{"key":"e_1_3_7_13_1","unstructured":"Wassel HD. The results of surgery for polydactyly of the thumb. 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