{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,2]],"date-time":"2026-10-02T20:56:01Z","timestamp":1790974561597,"version":"4.1.0"},"reference-count":16,"publisher":"BMJ","issue":"1","funder":[{"name":"AO Trauma Asia Pacific","award":["AOTAP grant 2019"],"award-info":[{"award-number":["AOTAP grant 2019"]}]}],"content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2020,12,16]]},"published-print":{"date-parts":[[2021,1]]},"abstract":"<jats:p>Scaphoid fractures, if deemed operative, can often be treated successfully by headless compression screw fixation. Unfortunately, some patients go on to develop a scaphoid fracture non-union with screw loosening, bone resorption, bone deformity and carpal malalignment. To assist surgeons in managing these difficult cases, specifically designed scaphoid fracture plates have recently been introduced. We present a case of a scaphoid fracture non-union with retained screws and bone loss that was effectively treated by volar plate fixation using a three-dimensional (3D) printed model to assist with restoration of scaphoid morphology and implant positioning. Before surgery, 3D preoperative planning using a surface registration technique and a 3D printer was performed. Referring to the 3D-printed reduced model facilitated the prediction of gaps after reduction and helped decide the implant position and screw directions. Carpal alignment parameters gradually improved by 1\u2009year postoperatively.<\/jats:p>","DOI":"10.1136\/bcr-2020-239548","type":"journal-article","created":{"date-parts":[[2021,1,12]],"date-time":"2021-01-12T18:48:56Z","timestamp":1610477336000},"page":"e239548","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":8,"title":["Scaphoid non-union with pre-existing screws treated by 3D preoperative planning"],"prefix":"10.1136","volume":"14","author":[{"given":"Satoshi","family":"Oki","sequence":"first","affiliation":[{"name":"Department of Orthopedic Surgery, Saiseikai Utsunomiya Hospital, Utsunomiya, Tochigi, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tomoki","family":"Matsuo","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Saiseikai Utsunomiya Hospital, Utsunomiya, Tochigi, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ryogo","family":"Furuhata","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Saiseikai Utsunomiya Hospital, Utsunomiya, Tochigi, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shohei","family":"Iwabu","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Saiseikai Utsunomiya Hospital, Utsunomiya, Tochigi, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2021,1,11]]},"reference":[{"key":"2025082710515834000_14.1.e239548.1","doi-asserted-by":"crossref","first-page":"134","DOI":"10.1302\/0301-620X.73B1.1991749","article-title":"Scaphoid malunion","volume":"73","author":"Nakamura","year":"1991","journal-title":"J Bone Joint Surg Br"},{"key":"2025082710515834000_14.1.e239548.2","doi-asserted-by":"crossref","first-page":"456","DOI":"10.1053\/jhsu.1999.0456","article-title":"The dorsal ligaments of the wrist: anatomy, mechanical properties, and function","volume":"24","author":"Viegas","year":"1999","journal-title":"J Hand Surg Am"},{"key":"2025082710515834000_14.1.e239548.3","doi-asserted-by":"publisher","DOI":"10.1016\/j.jhsa.2008.05.035"},{"key":"2025082710515834000_14.1.e239548.4","doi-asserted-by":"publisher","DOI":"10.1016\/j.mri.2012.05.001"},{"key":"2025082710515834000_14.1.e239548.5","doi-asserted-by":"publisher","DOI":"10.1109\/34.121791"},{"key":"2025082710515834000_14.1.e239548.6","doi-asserted-by":"crossref","first-page":"1000","DOI":"10.1016\/S0363-5023(87)80097-7","article-title":"Reduction of the scaphoid fracture with DISI alignment","volume":"12","author":"Nakamura","year":"1987","journal-title":"J Hand Surg Am"},{"key":"2025082710515834000_14.1.e239548.7","doi-asserted-by":"publisher","DOI":"10.1016\/j.jhsa.2005.03.001"},{"key":"2025082710515834000_14.1.e239548.8","doi-asserted-by":"crossref","first-page":"76","DOI":"10.1016\/S0363-5023(98)80093-2","article-title":"Measurement of the scaphoid Humpback deformity using longitudinal computed tomography: intra- and interobserver variability using various measurement techniques","volume":"23","author":"Bain","year":"1998","journal-title":"J Hand Surg Am"},{"key":"2025082710515834000_14.1.e239548.9","doi-asserted-by":"publisher","DOI":"10.1016\/j.jhsa.2014.10.037"},{"key":"2025082710515834000_14.1.e239548.10","doi-asserted-by":"crossref","first-page":"240","DOI":"10.1177\/1753193416680133","article-title":"Dorsal intercalated segmental instability associated with malunion of a reconstructed scaphoid","volume":"42","author":"Kim","year":"2017","journal-title":"J Hand Surg Eur Vol"},{"key":"2025082710515834000_14.1.e239548.11","first-page":"339","article-title":"Plate fixation with cancellous graft for scaphoid nonunion with avascular necrosis","volume":"44","author":"Putnam","year":"2019","journal-title":"J Hand Surg Am"},{"key":"2025082710515834000_14.1.e239548.12","doi-asserted-by":"crossref","first-page":"57","DOI":"10.1177\/1753193417743636","article-title":"Lessons learned from volar plate fixation of scaphoid fracture nonunions","volume":"43","author":"Dodds","year":"2018","journal-title":"J Hand Surg Eur Vol"},{"key":"2025082710515834000_14.1.e239548.13","doi-asserted-by":"crossref","first-page":"109","DOI":"10.1007\/s13246-015-0330-0","article-title":"Improved accuracy of 3D-printed navigational template during complicated tibial plateau fracture surgery","volume":"38","author":"Huang","year":"2015","journal-title":"Australas Phys Eng Sci Med"},{"key":"2025082710515834000_14.1.e239548.14","doi-asserted-by":"crossref","first-page":"1551","DOI":"10.1007\/s00402-014-2075-8","article-title":"Minimally invasive plate osteosynthesis using 3D printing for shaft fractures of clavicles: technical note","volume":"134","author":"Jeong","year":"2014","journal-title":"Arch Orthop Trauma Surg"},{"key":"2025082710515834000_14.1.e239548.15","doi-asserted-by":"crossref","first-page":"877","DOI":"10.1016\/j.otsr.2019.05.011","article-title":"Application of computer-assisted virtual surgical procedures and three-dimensional printing of patient-specific pre-contoured plates in bicolumnar acetabular fracture fixation","volume":"105","author":"Chen","year":"2019","journal-title":"Orthop Traumatol Surg Res"},{"key":"2025082710515834000_14.1.e239548.16","doi-asserted-by":"crossref","DOI":"10.12788\/ajo.2018.0023","article-title":"Proximal humerus fracture 3-D modeling","volume":"47","author":"Khanna","year":"2018","journal-title":"Am J Orthop"}],"container-title":["BMJ Case Reports"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/syndication.highwire.org\/content\/doi\/10.1136\/bcr-2020-239548","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,8,27]],"date-time":"2025-08-27T17:52:04Z","timestamp":1756317124000},"score":1,"resource":{"primary":{"URL":"https:\/\/casereports.bmj.com\/lookup\/doi\/10.1136\/bcr-2020-239548"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,1]]},"references-count":16,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2021,1,11]]},"published-print":{"date-parts":[[2021,1]]}},"alternative-id":["10.1136\/bcr-2020-239548"],"URL":"https:\/\/doi.org\/10.1136\/bcr-2020-239548","relation":{},"ISSN":["1757-790X"],"issn-type":[{"value":"1757-790X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,1]]}}}