{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,9]],"date-time":"2026-10-09T03:23:10Z","timestamp":1791516190887,"version":"4.3.4"},"reference-count":30,"publisher":"SAGE Publications","issue":"1","license":[{"start":{"date-parts":[[2024,5,23]],"date-time":"2024-05-23T00:00:00Z","timestamp":1716422400000},"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":[[2025,1]]},"abstract":"<jats:p>The distribution of motion between the radiocarpal and midcarpal joints in scapholunate instability is poorly understood. This has potential implications in predicting degenerative changes and in selecting salvage procedures. We studied 19 healthy wrists and 19 wrists with scapholunate instability using dynamic computed tomography during wrist extension to flexion and ulnar to radial deviation. Radiocarpal and midcarpal kinematics of the scaphoid and the lunate were computed. In scapholunate instability, in the radial column, there was increased motion in the radiocarpal joint when the wrist was radially deviating beyond 10\u00b0 or moving from 70\u00b0 to 40\u00b0 extension. In both groups, the capitolunate joint was the dominant articulation in the central column. In scapholunate instability, there was significantly more capitolunate motion during 70\u00b0 to 30\u00b0 extension. These changes may predict the development of radioscaphoid arthritis and enable identifying a kinematically abnormal wrist. The motion distribution in scapholunate instability was abnormal beyond 10\u00b0 of radial deviation and between 70\u00b0 and 40\u00b0 of wrist extension.<\/jats:p>\n                  <jats:p>Level of evidence: III<\/jats:p>","DOI":"10.1177\/17531934241242676","type":"journal-article","created":{"date-parts":[[2024,5,23]],"date-time":"2024-05-23T08:09:11Z","timestamp":1716451751000},"page":"103-113","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":8,"title":["Radiocarpal and midcarpal kinematics in scapholunate instability: a four-dimensional CT study in vivo"],"prefix":"10.1177","volume":"50","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5629-543X","authenticated-orcid":false,"given":"Melanie","family":"Amarasooriya","sequence":"first","affiliation":[{"name":"College of Medicine and Public Health, Flinders University of South Australia, Adelaide, SA, 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