{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,13]],"date-time":"2026-10-13T21:45:57Z","timestamp":1791927957865,"version":"4.3.4"},"reference-count":53,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"3","license":[{"start":{"date-parts":[[2026,7,1]],"date-time":"2026-07-01T00:00:00Z","timestamp":1782864000000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["lww.com","ovid.com"],"crossmark-restriction":true},"short-container-title":[],"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\u00bb Native femoral version (NFV) demonstrates inconsistent correlation with prosthetic femoral version (PFV) and should not be relied upon in isolation for femoral version planning in cementless total hip arthroplasty (THA).<\/jats:p>\n                  <jats:p>\u00bb Final stem version is strongly influenced by intramedullary canal morphology, fixation mechanics, and stem design philosophy. Straight, tapered wedge, and diaphyseal-engaging stems demonstrate greater variability in PFV, whereas anatomic and calcar-guided short stems may better preserve NFV.<\/jats:p>\n                  <jats:p>\u00bb Current planning methods inadequately characterise three-dimensional canal anatomy and fail to simulate canal-stem interaction, limiting accurate prediction of PFV.<\/jats:p>\n                  <jats:p>\u00bb Intraoperative estimation methods remain inconsistent and highly dependent on surgeon experience. Robotic-assisted THA enables real-time PFV measurements and supports femur-first strategies to optimise combined anteversion, although current systems still rely on computed tomography templating without true canal\u2013stem interaction modelling.<\/jats:p>\n                  <jats:p>\u00bb Reliable PFV prediction will likely require next-generation planning platforms integrating internal canal anatomy, statistical shape modelling and artificial intelligence-driven modelling into planning workflows.<\/jats:p>","DOI":"10.2106\/jbjs.oa.25.00300","type":"journal-article","created":{"date-parts":[[2026,7,24]],"date-time":"2026-07-24T18:01:09Z","timestamp":1784916069000},"update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":0,"title":["Femoral Stem Version in Primary Hip Arthroplasty: Challenges and Advances in 3D Planning"],"prefix":"10.2106","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7396-4068","authenticated-orcid":false,"given":"Angelika","family":"Ramesh","sequence":"first","affiliation":[{"name":"Department of Mechanical Engineering, University College London, London, United Kingdom"},{"name":"Royal National Orthopaedic Hospital, Stanmore, United Kingdom"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4086-1609","authenticated-orcid":false,"given":"Johann","family":"Henckel","sequence":"additional","affiliation":[{"name":"Royal National Orthopaedic Hospital, Stanmore, United Kingdom"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1281-6886","authenticated-orcid":false,"given":"Alister","family":"Hart","sequence":"additional","affiliation":[{"name":"Royal National Orthopaedic Hospital, Stanmore, United Kingdom"},{"name":"Institute of Orthopaedic & Musculoskeletal Science, 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