{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,29]],"date-time":"2026-10-29T15:17:42Z","timestamp":1793287062929,"version":"4.5.0"},"reference-count":28,"publisher":"Georg Thieme Verlag KG","issue":"03","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J Wrist Surg"],"published-print":{"date-parts":[[2022,6]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>\n          Background\u2003Volar ulnar corner fractures are a subset of distal radius fractures that can have disastrous complications if not appreciated, recognized, and appropriately managed. The volar ulnar corner of the distal radius is the \u201ccritical corner\u201d between the radial calcar, distal ulna, and carpus and is responsible for maintaining stability while transferring force from the carpus.<\/jats:p><jats:p>\n          Description\u2003Force transmitted from the carpus to the radial diaphysis is via the radial calcar. A breach in this area of thickened cortex may result in the collapse of the critical corner. The watershed ridge (line) is clinically important in these injuries and must be appreciated during planning and fixation. Fractures distal to the watershed ridge create an added level of complexity and associated injuries must be managed. An osteoligamentous unit comprises bone\u2013ligament\u2013bone construct. Volar ulnar corner fractures represent a spectrum of osteoligamentous injuries each with their own associated injuries and management techniques. The force from the initial volar ulnar corner fracture can propagate along the volar rim resulting in an occult volar ligament injury, which is a larger zone of injury than appreciated on radiographs and computerized tomography scan. These lesions are often underestimated at the time of fixation, and for this reason, we refer to them as sleeper lesions. Unfortunately, they may become unmasked once the wrist is mobilized or loaded.<\/jats:p><jats:p>\n          Conclusions\u2003Management requires careful planning due to a relatively high rate of complications after fixation. A systematic approach to plate positioning, utilizing several fixation techniques beyond the standard volar rim plate, and utilizing fluoroscopy and\/or arthroscopy is the key strategy to assist with management. In this article, we take a different view of the volar ulnar corner anatomy, applied anatomy of the region, associated injuries, and management options.<\/jats:p>","DOI":"10.1055\/s-0042-1748674","type":"journal-article","created":{"date-parts":[[2022,7,12]],"date-time":"2022-07-12T22:30:19Z","timestamp":1657665019000},"page":"238-249","source":"Crossref","is-referenced-by-count":10,"title":["Anatomical and Clinical Concepts in Distal Radius Volar Ulnar Corner fractures"],"prefix":"10.1055","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9821-0345","authenticated-orcid":false,"given":"Wael","family":"Chiri","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Flinders Medical Centre, Adelaide, South Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Simon BM","family":"MacLean","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Tauranga Hospital, Bay of Plenty, New Zealand"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jock","family":"Clarnette","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Flinders Medical Centre, Adelaide, South Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nathan","family":"Eardley-Harris","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Flinders Medical Centre, Adelaide, South Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"John","family":"White","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Flinders Medical Centre, Adelaide, South Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gregory I.","family":"Bain","sequence":"additional","affiliation":[{"name":"Division of Upper Limb and Research, Department of Orthopaedic Surgery, Flinders University and Flinders Medical Centre, Adelaide, South Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"194","published-online":{"date-parts":[[2022,7,12]]},"reference":[{"issue":"01","key":"ref1","doi-asserted-by":"crossref","first-page":"55","DOI":"10.1016\/0020-1383(93)90085-K","article-title":"Classification and treatment of volar Barton fractures","volume":"24","author":"A K Mehara","year":"1993","journal-title":"Injury"},{"issue":"01","key":"ref2","doi-asserted-by":"crossref","first-page":"42","DOI":"10.1016\/j.jhsa.2014.09.013","article-title":"Displaced intra-articular fractures involving the volar rim of the distal radius","volume":"40","author":"A Marcano","year":"2015","journal-title":"J Hand Surg Am"},{"issue":"01","key":"ref5","doi-asserted-by":"crossref","first-page":"16","DOI":"10.1016\/S0266-7681(97)80006-X","article-title":"Altered patterns of subchondral bone mineralization in Kienb\u00f6ck's disease","volume":"22","author":"R Giunta","year":"1997","journal-title":"J Hand Surg [Br]"},{"issue":"01","key":"ref6","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1186\/s13018-018-1031-7","article-title":"Inferomedial cortical bone contact and fixation with calcar screws on the dynamic and static mechanical stability of proximal humerus fractures","volume":"14","author":"X Zhang","year":"2019","journal-title":"J Orthop Surg Res"},{"issue":"04","key":"ref7","doi-asserted-by":"crossref","first-page":"311","DOI":"10.1111\/j.1757-7861.2009.00053.x","article-title":"The role of the calcar femorale in stress distribution in the proximal femur","volume":"1","author":"Q Zhang","year":"2009","journal-title":"Orthop Surg"},{"issue":"04","key":"ref8","doi-asserted-by":"crossref","first-page":"757","DOI":"10.1016\/j.orthres.2005.01.011","article-title":"Differences in the presence of mechanoreceptors and nerve structures between wrist ligaments may imply differential roles in wrist stabilization","volume":"23","author":"E Hagert","year":"2005","journal-title":"J Orthop Res"},{"key":"ref9","volume-title":"Scaphoid variation and an anatomical basis for variable carpal mechanics [Ph. 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