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After arthroplasty, there were significant increases in both stiffness and phase angle of wrist motion across all planes of motion assessed. In three specimens, a sudden increase in moment was observed on load\/displacement curves. Radiographically, carpal height increased by 14%, and the centre of rotation was displaced 11.1\u2009mm proximally, 4.6\u2009mm dorsally and 3.9\u2009mm radially. This stretched the musculotendinous units, tightening the joint, while increasing the moment arm of the wrist flexors and decreasing the moment arm of the extensors, potentially important in the development of postoperative flexion contractures. Possible alterations in technique and\/or implant design are considered to assist surgeons in achieving optimal clinical and survivorship outcomes.<\/jats:p>","DOI":"10.1177\/17531934241274135","type":"journal-article","created":{"date-parts":[[2024,9,16]],"date-time":"2024-09-16T08:28:22Z","timestamp":1726475302000},"page":"492-499","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":4,"title":["Biomechanical analysis of cadaveric wrists before and after MOTEC wrist arthroplasty using a hexapod robot"],"prefix":"10.1177","volume":"50","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3258-996X","authenticated-orcid":false,"given":"Gregory I.","family":"Bain","sequence":"first","affiliation":[{"name":"Department of Orthopaedic Surgery and Trauma, Flinders University, Bedford Park, South Australia, Australia"},{"name":"Department of Orthopaedic Surgery and Trauma, Flinders Medical Centre, Bedford Park, South Australia, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Simon F.","family":"Bellringer","sequence":"additional","affiliation":[{"name":"Department of Trauma and Orthopaedics, University Hospitals Sussex, Brighton, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael P.","family":"Russo","sequence":"additional","affiliation":[{"name":"Biomechanics and Implants Research Group, Medical Device Research Institute, College of Science and Engineering, Flinders University, Bedford Park, South Australia, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dhara","family":"Amin","sequence":"additional","affiliation":[{"name":"Department of Trauma and Orthopaedics, University Hospitals Sussex, Brighton, UK"},{"name":"Biomechanics and Implants Research Group, Medical Device Research Institute, College of Science and Engineering, Flinders University, Bedford Park, South Australia, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"John J.","family":"Costi","sequence":"additional","affiliation":[{"name":"Biomechanics and Implants Research Group, Medical Device Research Institute, College of Science and Engineering, Flinders University, Bedford Park, South Australia, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2024,9,16]]},"reference":[{"key":"e_1_3_5_2_1","doi-asserted-by":"publisher","DOI":"10.1002\/jor.24717"},{"key":"e_1_3_5_3_1","unstructured":"Australian Orthopaedic Association (2022) National Joint Replacement registry \u2013 Demographics Outcomes of Elbow & Wrist Arthroplasty Supplementary Report. https:\/\/aoanjrr.sahmri.com\/annual-reports-2022\/supplementary (accessed July 2024)."},{"key":"e_1_3_5_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jhsa.2014.09.019"},{"key":"e_1_3_5_5_1","doi-asserted-by":"publisher","DOI":"10.1007\/s11517-012-0982-9"},{"key":"e_1_3_5_6_1","doi-asserted-by":"publisher","DOI":"10.1055\/s-0038-1646956"},{"key":"e_1_3_5_7_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1748-1716.1894.tb00198.x"},{"key":"e_1_3_5_8_1","doi-asserted-by":"crossref","unstructured":"Ding B Stanley RM Cazzolato BS Costi JJ. 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