{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,15]],"date-time":"2026-10-15T16:50:44Z","timestamp":1792083044784,"version":"4.4.0"},"reference-count":20,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2026,9,7]],"date-time":"2026-09-07T00:00:00Z","timestamp":1788739200000},"content-version":"vor","delay-in-days":68,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,7,1]],"date-time":"2026-07-01T00:00:00Z","timestamp":1782864000000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["esskajournals.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J. exp. orthop."],"published-print":{"date-parts":[[2026,7]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:label\/>\n                    <jats:p>\n                      While robotic\u2010assisted total knee arthroplasty (rTKA) has been proven to achieve highly precise and reproducible radiographic results, its accuracy remains highly dependent on correct intraoperative landmark acquisition. This technical guide aims to provide practical guidance for intraoperative recognition of landmarking and gap balance assessment errors during rTKA using the image\u2010free VELYS\n                      <jats:sup>TM<\/jats:sup>\n                      system. Based on the authors' clinical experience with this system, the most common pitfalls as well as their intraoperative recognition are highlighted. Special focus is set on pin placement, bone reference checkpoints and landmark acquisition, with practical intraoperative cues that allow surgeons to detect these errors intraoperatively before bone resections are performed. The present article should support early adopters of the VELYS\n                      <jats:sup>TM<\/jats:sup>\n                      system, with the aim of preventing precision inaccuracies.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Level of Evidence<\/jats:title>\n                    <jats:p>Level V.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/jeo2.70902","type":"journal-article","created":{"date-parts":[[2026,9,7]],"date-time":"2026-09-07T15:49:02Z","timestamp":1788796142000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Intraoperative landmarking errors and their avoidance in robotic\u2010assisted total knee arthroplasty using the VELYS system"],"prefix":"10.1002","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6989-1196","authenticated-orcid":false,"given":"Alexander","family":"Aichmair","sequence":"first","affiliation":[{"name":"Department of Arthroplasty Orthopaedic Hospital Speising Vienna Austria"},{"name":"Orthopaedic Hospital Speising Michael Ogon Laboratory for Orthopaedic Research Vienna Austria"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Heiko","family":"Graichen","sequence":"additional","affiliation":[{"name":"Department of Personalised Orthopaedics (PersO) Privatklinik Siloah Berne Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nimrod","family":"Snir","sequence":"additional","affiliation":[{"name":"Division of Orthopedics Tel Aviv Sourasky Medical Center Tel Aviv\u2010Yafo Israel"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Benjamin V.","family":"Bloch","sequence":"additional","affiliation":[{"name":"Nottingham Elective Orthopaedic Service Nottingham University Hospitals NHS Trust Nottingham UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ugonna N.","family":"Ihekweazu","sequence":"additional","affiliation":[{"name":"Fondren Orthopedic Group Fondren Orthopedic Research Institute Houston Texas USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jochen G.","family":"Hofstaetter","sequence":"additional","affiliation":[{"name":"Department of Arthroplasty Orthopaedic Hospital Speising Vienna Austria"},{"name":"Orthopaedic Hospital Speising Michael Ogon Laboratory for Orthopaedic Research Vienna Austria"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael T.","family":"Hirschmann","sequence":"additional","affiliation":[{"name":"University Department of Orthopaedic Surgery and Traumatology Kantonsspital Baselland Bruderholz Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pieter\u2010Jan","family":"Vandekerckhove","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery and Traumatology Sint\u2010Jan Hospital Bruges Belgium"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,9,7]]},"reference":[{"key":"e_1_2_14_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.knee.2019.01.002"},{"key":"e_1_2_14_3_1","first-page":"315","article-title":"Patient\u2010specific TKA with the VELYS\u2122 robotic\u2010assisted solution","volume":"40","author":"Clatworthy M","year":"2022","journal-title":"Surg Technol Int"},{"key":"e_1_2_14_4_1","article-title":"Initial experience with VELYS robot\u2010assisted total knee replacement: coronal plane accuracy and effect of robotic training on outcomes","volume":"16","author":"Daxini 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REP","year":"2024","journal-title":"Cureus"},{"key":"e_1_2_14_14_1","doi-asserted-by":"publisher","DOI":"10.2106\/00004623-197961020-00003"},{"key":"e_1_2_14_15_1","doi-asserted-by":"publisher","DOI":"10.1080\/00016470410001708150"},{"key":"e_1_2_14_16_1","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.103B2.BJJ-2020-1050.R1"},{"key":"e_1_2_14_17_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-018-4989-0"},{"key":"e_1_2_14_18_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.artd.2022.101090"},{"key":"e_1_2_14_19_1","doi-asserted-by":"publisher","DOI":"10.1302\/0301-620X.102B3.BJJ-2019-1729"},{"key":"e_1_2_14_20_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.arth.2023.08.042"},{"key":"e_1_2_14_21_1","unstructured":"VELYS robotic\u2010assisted solution for total knee user guide (v1.9).https:\/\/www.e-IfuCom\/Shared-Document\/34903\/1\/1\/Shared. Accessed August 21 2026."}],"container-title":["Journal of Experimental Orthopaedics"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/esskajournals.onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/jeo2.70902","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/esskajournals.onlinelibrary.wiley.com\/doi\/full-xml\/10.1002\/jeo2.70902","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/esskajournals.onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/jeo2.70902","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,10,15]],"date-time":"2026-10-15T16:01:56Z","timestamp":1792080116000},"score":1,"resource":{"primary":{"URL":"https:\/\/esskajournals.onlinelibrary.wiley.com\/doi\/10.1002\/jeo2.70902"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,7]]},"references-count":20,"journal-issue":{"issue":"3","published-print":{"date-parts":[[2026,7]]}},"alternative-id":["10.1002\/jeo2.70902"],"URL":"https:\/\/doi.org\/10.1002\/jeo2.70902","archive":["Portico"],"relation":{},"ISSN":["2197-1153","2197-1153"],"issn-type":[{"value":"2197-1153","type":"print"},{"value":"2197-1153","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,7]]},"assertion":[{"value":"2026-07-18","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-08-22","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-09-07","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}],"article-number":"e70902"}}