{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,24]],"date-time":"2026-08-24T14:51:55Z","timestamp":1787583115232,"version":"build-2736575974"},"reference-count":53,"publisher":"EDP Sciences","license":[{"start":{"date-parts":[[2025,3,4]],"date-time":"2025-03-04T00:00:00Z","timestamp":1741046400000},"content-version":"vor","delay-in-days":62,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["SICOT-J"],"accepted":{"date-parts":[[2025,2,2]]},"published-print":{"date-parts":[[2025]]},"abstract":"<jats:p><jats:italic>Introduction<\/jats:italic>: Although the surgical techniques and functional outcomes of conventional total knee arthroplasty (TKA) are well-established, there is limited data available on robotic arm-assisted TKA (RATKA) in the context of valgus knee arthroplasty. The purpose of this study is to assess the efficacy of RATKA in the correction of moderate to severe valgus knee deformities using minimally constrained implants and to evaluate the short-term functional outcomes associated with this technique. <jats:italic>Methods<\/jats:italic>: This prospective study was conducted on patients with moderate to severe grade valgus knee deformity who underwent RATKA from August 1, 2020 to May 31, 2022. Of 873 primary RATKA cases, 48 cases had valgus knee deformities. Among these, 27 had grade 2\u20133 valgus with intact medial collateral ligament (MCL), two had grade 3 valgus with incompetent MCL, 14 had grade 1 valgus, and five had post-traumatic valgus deformities. Over a two-year follow-up period, functional outcomes were assessed using the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) and Knee Society Score (KSS), and complications were documented; however, radiological outcomes were not analyzed. <jats:italic>Results<\/jats:italic>: Among 27 patients with Grade 2\u20133 valgus, the final cohort included 21 patients (24 knees). The mean age was 58.33\u00a0\u00b1\u00a09.63\u00a0years and 70.8% were female. Ten (41.7%) patients had rheumatoid arthritis and 14 (58.3%) had degenerative osteoarthritis (OA). The median surgical time was 68.00 (13.00) minutes, and the median blood loss was 478.45 (176.25) mL. The valgus grade was reduced from a baseline value of 22.43\u00a0\u00b1\u00a07.05 degrees to 5.26\u00a0\u00b1\u00a01.53 degrees at 6 weeks. The WOMAC scores improved from 67.58\u00a0\u00b1\u00a07.27\u00a0at baseline to 1.38\u00a0\u00b1\u00a00.57 in the second year post-operatively. Similarly, the KSS scores improved from 26.67\u00a0\u00b1\u00a010.34\u00a0at baseline to 181.96\u00a0\u00b1\u00a07.20 in the second year. One patient sustained a Type II supracondylar femur fracture after a fall, managed with distal femur arthroplasty, while another had delayed tibia pin tract healing, treated with antibiotics and dressings. <jats:italic>Conclusion<\/jats:italic>: RATKA facilitates precise correction of moderate to severe valgus deformity through enhanced surgical planning and execution, achieving adequate functional outcomes with minimal complications through the application of functional alignment philosophy.<\/jats:p>","DOI":"10.1051\/sicotj\/2025005","type":"journal-article","created":{"date-parts":[[2025,3,4]],"date-time":"2025-03-04T08:50:41Z","timestamp":1741078241000},"page":"12","source":"Crossref","is-referenced-by-count":7,"title":["Robotic total knee arthroplasty for moderate to high-grade valgus knee deformity: technique and outcomes"],"prefix":"10.1051","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0009-0006-4130-4619","authenticated-orcid":false,"given":"Kanukuntla","family":"Kalyan","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7908-1098","authenticated-orcid":false,"given":"Ashish","family":"Singh","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9936-6701","authenticated-orcid":false,"given":"Purushotam","family":"Kumar","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0003-1217-7559","authenticated-orcid":false,"given":"Akash Chandrashekar","family":"Gundalli","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8020-3099","authenticated-orcid":false,"given":"Sudhir Shankar","family":"Mane","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5923-3146","authenticated-orcid":false,"given":"Himanshu","family":"Swarnkar","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0000-4838-0581","authenticated-orcid":false,"given":"Lavanya","family":"Singh","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"250","published-online":{"date-parts":[[2025,3,4]]},"reference":[{"key":"R1","doi-asserted-by":"crossref","first-page":"329","DOI":"10.1302\/0301-620X.103B2.BJJ-2020-1050.R1","volume":"103-B","author":"MacDessi","year":"2021","journal-title":"Bone Jt J"},{"key":"R2","first-page":"271","volume":"87","author":"Ranawat","year":"2005","journal-title":"J Bone Jt Surg"},{"key":"R3","doi-asserted-by":"crossref","first-page":"16","DOI":"10.5435\/00124635-200201000-00004","volume":"10","author":"Favorito","year":"2002","journal-title":"J Am Acad Orthop Surg"},{"key":"R4","doi-asserted-by":"crossref","first-page":"60","DOI":"10.1177\/230949901101900114","volume":"19","author":"Rajgopal","year":"2011","journal-title":"J Orthop Surg"},{"key":"R5","doi-asserted-by":"crossref","first-page":"1814","DOI":"10.1016\/j.arth.2017.01.024","volume":"32","author":"Xie","year":"2017","journal-title":"J Arthroplasty"},{"key":"R6","doi-asserted-by":"crossref","unstructured":"Krackow KA, Jones MM, Teeny SM, Hungerford DS (1991) Primary total knee arthroplasty in patients with fixed valgus deformity. 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