{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,30]],"date-time":"2026-06-30T03:11:28Z","timestamp":1782789088252,"version":"3.54.5"},"reference-count":20,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2024,5,20]],"date-time":"2024-05-20T00:00:00Z","timestamp":1716163200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Knee surg. sports traumatol. arthrosc."],"published-print":{"date-parts":[[2025,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>Robotic\u2010assisted total knee arthroplasty (TKA) has been shown to improve the accuracy and precision of bony resections and implant position. However, the in vivo accuracy of the full surgical workflow has not been widely reported. The primary objective of this study is to determine the accuracy and precision of a robotic\u2010arm\u2010assisted system throughout the intraoperative workflow.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>This was a retrospective cohort study of adult patients who underwent primary TKA with various workflows and alignment targets by three arthroplasty\u2010trained surgeons with previous experience using the ROSA\u00ae Knee System (Zimmer Biomet) over a 3\u2010month follow\u2010up period. Accuracy and precision were determined by measuring the difference between various workflow time points, including the final preoperative plan (PP), robot\u2010validated (RV) resection angle\u00a0and postoperative radiographs (PR). The absolute mean difference between the measurements determined accuracy, and the standard deviation represented precision. The lateral distal femoral angle, medial proximal tibial angle, femoral flexion angle and tibial slope were measured on postoperative coronal long\u2010leg radiographs and true short\u2010leg lateral radiographs.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>A total of 77 patients were included in the final analyses. The accuracy for the coronal femoral angle was 1.62\u2009\u00b1\u20091.11\u00b0, 0.75\u2009\u00b1\u20090.79\u00b0\u00a0and 1.96\u2009\u00b1\u20091.29\u00b0 for the differences between PP and PR, PP and RV\u00a0and RV and PR. The tibial coronal accuracy was 1.44\u2009\u00b1\u20091.03\u00b0, 0.81\u2009\u00b1\u20090.67\u00b0\u00a0and 1.57\u2009\u00b1\u20091.14\u00b0 for PP\/PR, PP\/RV\u00a0and RV\/PR, respectively. Femoral flexion accuracy was 1.39\u2009\u00b1\u20091.05\u00b0, 0.83\u2009\u00b1\u20090.59\u00b0\u00a0and 1.81\u2009\u00b1\u20091.21\u00b0 for PP\/PR, PP\/RV\u00a0and RV\/PR, respectively. Tibial slope accuracy was 0.99\u2009\u00b1\u20090.72\u00b0, 1.19\u2009\u00b1\u20090.87\u00b0\u00a0and 1.63\u2009\u00b1\u20091.11\u00b0, respectively. The proportion of patients within 3\u00b0 was 93.2%, 95.3%, 97.3%\u00a0and 94.6% for the distal femur, proximal tibia, femoral flexion\u00a0and tibial slope angles when the final intraoperative plan was compared to PRs. No patients had a postoperative complication at the final follow\u2010up.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>The ROSA Knee System has acceptable accuracy and precision of coronal and sagittal plane resections with few outliers at various steps throughout the platform's entire workflow in vivo.<\/jats:p><\/jats:sec><jats:sec><jats:title>Level of Evidence<\/jats:title><jats:p>Level III.<\/jats:p><\/jats:sec>","DOI":"10.1002\/ksa.12272","type":"journal-article","created":{"date-parts":[[2024,5,21]],"date-time":"2024-05-21T02:14:50Z","timestamp":1716257690000},"page":"229-238","source":"Crossref","is-referenced-by-count":13,"title":["High in\u2010vivo accuracy of a novel robotic\u2010arm\u2010assisted system for total knee arthroplasty"],"prefix":"10.1002","volume":"33","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5610-7582","authenticated-orcid":false,"given":"Faseeh","family":"Zaidi","sequence":"first","affiliation":[{"name":"Department of Surgery University of Auckland Auckland New Zealand"},{"name":"Auckland Bioengineering Institute University of Auckland Auckland New Zealand"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Craig M.","family":"Goplen","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery Auckland City Hospital Auckland New Zealand"},{"name":"Department of Surgery University of Alberta Edmonton Alberta Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Connor","family":"Fitz\u2010Gerald","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery Auckland City Hospital Auckland New Zealand"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Scott M.","family":"Bolam","sequence":"additional","affiliation":[{"name":"Department of Surgery University of Auckland Auckland New Zealand"},{"name":"Department of Orthopaedic Surgery Auckland City Hospital Auckland New Zealand"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael","family":"Hanlon","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery Auckland City Hospital Auckland New Zealand"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jacob T.","family":"Munro","sequence":"additional","affiliation":[{"name":"Department of Surgery University of Auckland Auckland New Zealand"},{"name":"Department of Orthopaedic Surgery Auckland City Hospital Auckland New Zealand"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andrew P.","family":"Monk","sequence":"additional","affiliation":[{"name":"Department of Surgery University of Auckland Auckland New Zealand"},{"name":"Auckland Bioengineering Institute University of Auckland Auckland New Zealand"},{"name":"Department of Orthopaedic Surgery Auckland City Hospital Auckland New Zealand"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2024,5,20]]},"reference":[{"key":"e_1_2_13_2_1","doi-asserted-by":"crossref","unstructured":"An H.M. 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