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This study investigated scaphotrapeziotrapezoid fusion based on a previously validated whole-wrist finite element model to simulate arthrodesis by creating a unified bone complex from the three bones (scaphoid, trapezium and trapezoid) in the joint. The model was analysed under physiological grasping loads to examine axial load distributions and articular contact pressures at the radioscaphoid and radiolunate interfaces. The fused complex becomes a major load-bearing structure, while radiocarpal contact pressures at both the radioscaphoid and radiolunate interfaces show reductions compared with the intact model. This altered load distribution pattern suggests significant biomechanical adaptations after the procedure and supports its use for scapholunate instability and the treatment of Kienb\u00f6ck\u2019s disease.<\/jats:p>","DOI":"10.1177\/17531934251374508","type":"journal-article","created":{"date-parts":[[2025,9,5]],"date-time":"2025-09-05T21:42:45Z","timestamp":1757108565000},"page":"146-152","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":1,"title":["Mechanical consequences of scaphotrapeziotrapezoid fusion studied by computational modelling"],"prefix":"10.1177","volume":"51","author":[{"given":"Andres","family":"Mena","sequence":"first","affiliation":[{"name":"Texas Tech University, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"James","family":"Yang","sequence":"additional","affiliation":[{"name":"Texas Tech University, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jonathan","family":"Whitehead","sequence":"additional","affiliation":[{"name":"University of Alabama at Birmingham, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9092-3930","authenticated-orcid":false,"given":"Ronit","family":"Wollstein","sequence":"additional","affiliation":[{"name":"University of Alabama at Birmingham, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2025,9,5]]},"reference":[{"key":"e_1_3_4_2_1","article-title":"Scaphotrapeziotrapezoid arthrodesis using limited wrist fusion plates in Kienb\u00f6ck\u2019s disease","volume":"11","author":"Acar B","year":"2019","unstructured":"Acar B, Turan A, Kose O, Ozturk S, Sindel M. 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