{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T14:46:00Z","timestamp":1787755560560,"version":"build-2784847793"},"reference-count":30,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"10","content-domain":{"domain":["lww.com","ovid.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2025,5,21]]},"abstract":"\n Background:<\/jats:title>\n The indications for unicompartmental knee arthroplasty (UKA) are restricted by multiple criteria. The aim of this study was to explore the functional results of UKA in a population of patients outside the classical criteria.<\/jats:p>\n <\/jats:sec>\n \n Methods:<\/jats:title>\n \n This study included a population of 197 patients who underwent UKA for medial osteoarthritis between 2017 and 2020. Two groups of patients were compared: those meeting the classical criteria and those presenting with \u22651 contraindication (e.g., age of \u226575 years, body mass index [BMI] of \u226530 kg\/m\n 2<\/jats:sup>\n , or coronal limb deformity of >8\u00b0). The implant that was used was a modern fixed-bearing primary medial UKA component. The minimal follow-up was 3 years. The primary outcome was the functional results, including the Knee Society Score (KSS), and the secondary outcomes were the complication and revision rates.\n <\/jats:p>\n <\/jats:sec>\n \n Results:<\/jats:title>\n There were 100 patients in the indication group and 97 in the off-indication group. No significant differences were observed between the 2 groups for height, sex ratio, operated side, or osteoarthritis stage (p > 0.05). There was no significant difference in the KSS between the 2 groups (p = 0.96). At 3 years of follow-up, the survival rate without revision was 100% in the indication group and 95.38% in the off-indication group (p = 0.57). The rate of complications was 12.9% in the indication group and 8.96% in the off-indication group (p = 0.47).<\/jats:p>\n <\/jats:sec>\n \n Conclusions:<\/jats:title>\n \n UKA for medial osteoarthritis yielded the same functional results for patients presenting with \u22651 theoretical contraindication, including a BMI of \u226530 kg\/m\n 2<\/jats:sup>\n , age of \u226575 years, and coronal limb deformity of >8\u00b0, without altering the complication or revision rates at 3 years of follow-up.\n <\/jats:p>\n <\/jats:sec>\n \n Level of Evidence:<\/jats:title>\n \n Therapeutic\n Level III<\/jats:underline>\n . See Instructions for Authors for a complete description of levels of evidence.\n <\/jats:p>\n <\/jats:sec>","DOI":"10.2106\/jbjs.24.01087","type":"journal-article","created":{"date-parts":[[2025,4,3]],"date-time":"2025-04-03T19:12:40Z","timestamp":1743707560000},"page":"1082-1089","update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":0,"title":["Similar Functional Results in Patients Outside the Classical Criteria for Medial Unicompartmental Knee Arthroplasty"],"prefix":"10.2106","volume":"107","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5667-9716","authenticated-orcid":false,"given":"Fernando","family":"Vanoli","sequence":"first","affiliation":[{"name":"Institute for Locomotion, Hospital Sainte Marguerite, Aix-Marseille University, Marseille, France"},{"name":"Public Teaching Hospital of Marseille, Marseille, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2652-2072","authenticated-orcid":false,"given":"Corentin","family":"Pangaud","sequence":"additional","affiliation":[{"name":"Institute for Locomotion, Hospital Sainte Marguerite, Aix-Marseille University, Marseille, France"},{"name":"Clinique des Portes du Sud, Groupe Pauchet Sant\u00e9, V\u00e9nissieux, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0004-3763-5779","authenticated-orcid":false,"given":"Pauline","family":"Chabas","sequence":"additional","affiliation":[{"name":"Institute for Locomotion, Hospital Sainte Marguerite, Aix-Marseille University, Marseille, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5457-0859","authenticated-orcid":false,"given":"Sylvain","family":"Guy","sequence":"additional","affiliation":[{"name":"Institute for Locomotion, Hospital Sainte Marguerite, Aix-Marseille University, Marseille, France"},{"name":"Public Teaching Hospital of Marseille, Marseille, France"},{"name":"Faculty of Medicine, Aix-Marseille University, Marseille, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8935-9666","authenticated-orcid":false,"given":"Henri","family":"Peuchot","sequence":"additional","affiliation":[{"name":"Institute for Locomotion, Hospital Sainte Marguerite, Aix-Marseille University, Marseille, France"},{"name":"Public Teaching Hospital of Marseille, Marseille, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Matthieu","family":"Ollivier","sequence":"additional","affiliation":[{"name":"Institute for Locomotion, Hospital Sainte Marguerite, Aix-Marseille University, Marseille, France"},{"name":"Public Teaching Hospital of Marseille, Marseille, France"},{"name":"Faculty of Medicine, Aix-Marseille University, Marseille, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0879-7803","authenticated-orcid":false,"given":"Jean-No\u00ebl","family":"Argenson","sequence":"additional","affiliation":[{"name":"Institute for Locomotion, Hospital Sainte Marguerite, Aix-Marseille University, Marseille, France"},{"name":"Public Teaching Hospital of Marseille, Marseille, France"},{"name":"Faculty of Medicine, Aix-Marseille University, Marseille, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0006-4065-6049","authenticated-orcid":false,"given":"Christophe","family":"Jacquet","sequence":"additional","affiliation":[{"name":"Institute for Locomotion, Hospital Sainte Marguerite, Aix-Marseille University, Marseille, France"},{"name":"Public Teaching Hospital of Marseille, Marseille, France"},{"name":"Faculty of Medicine, Aix-Marseille University, Marseille, France"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"276","published-online":{"date-parts":[[2025,4,2]]},"reference":[{"issue":"8","key":"bib1-20250526","first-page":"62","article-title":"Unicondylar knee arthroplasty in middle-aged patients: a minimum 5-year follow-up","volume":"30","author":"Cartier","year":"2007","journal-title":"Orthopedics."},{"issue":"1","key":"bib2-20250526","doi-asserted-by":"crossref","first-page":"145","DOI":"10.2106\/00004623-198971010-00023","article-title":"Unicondylar knee arthroplasty","volume":"71","author":"Kozinn","year":"1989","journal-title":"J Bone Joint Surg Am."},{"issue":"11","key":"bib3-20250526","doi-asserted-by":"crossref","first-page":"1506","DOI":"10.1302\/0301-620X.97B11.35551","article-title":"Optimal usage of unicompartmental knee arthroplasty: a study of 41,986 cases from the National Joint Registry for England and Wales","volume":"97-B","author":"Liddle","year":"2015","journal-title":"Bone Joint J."},{"issue":"10","key":"bib4-20250526","doi-asserted-by":"crossref","first-page":"34","DOI":"10.1302\/0301-620X.98B10.BJJ-2016-0480.R1","article-title":"The results of Oxford unicompartmental knee arthroplasty in the United States: a mean ten-year survival analysis","volume":"98-B","author":"Emerson","year":"2016","journal-title":"Bone Joint J."},{"issue":"1","key":"bib5-20250526","doi-asserted-by":"crossref","first-page":"24","DOI":"10.1302\/0301-620X.101B1.BJJ-2018-0564.R2","article-title":"An assessment of early functional rehabilitation and hospital discharge in conventional versus robotic-arm assisted unicompartmental knee arthroplasty: a prospective cohort study","volume":"101-B","author":"Kayani","year":"2019","journal-title":"Bone Joint J."},{"issue":"2S","key":"bib6-20250526","first-page":"38","article-title":"Medial vs lateral unicompartmental knee arthrroplasty: clinical results","volume":"88","author":"Fiocchi","year":"2017","journal-title":"Acta Biomed."},{"issue":"12","key":"bib7-20250526","doi-asserted-by":"crossref","first-page":"2668","DOI":"10.1016\/j.arth.2016.06.034","article-title":"Unicompartmental Knee Arthroplasty in Patients Older Than 75 Results in Better Clinical Outcomes and Similar Survivorship Compared to Total Knee Arthroplasty. A Matched Controlled Study","volume":"31","author":"Fabre-Aubrespy","year":"2016","journal-title":"J Arthroplasty."},{"issue":"16","key":"bib8-20250526","doi-asserted-by":"crossref","first-page":"3594","DOI":"10.3390\/jcm10163594","article-title":"Unicompartmental Knee Replacement in Obese Patients: A Systematic Review and Meta-Analysis","volume":"10","author":"Campi","year":"2021","journal-title":"J Clin Med."},{"issue":"1","key":"bib9-20250526","doi-asserted-by":"crossref","first-page":"98","DOI":"10.1186\/s13018-022-02999-5","article-title":"Perioperative varus alignment does not affect short-term patient-reported outcome measures following mobile-bearing unicompartmental knee arthroplasty","volume":"17","author":"Itou","year":"2022","journal-title":"J Orthop Surg Res."},{"issue":"4","key":"bib10-20250526","first-page":"252","article-title":"Consensus Statement on Indications and Contraindications for Medial Unicompartmental Knee Arthroplasty","volume":"24","author":"Berend","year":"2015","journal-title":"J Surg Orthop Adv."},{"issue":"12","key":"bib11-20250526","doi-asserted-by":"crossref","first-page":"2903","DOI":"10.1016\/j.arth.2019.07.031","article-title":"Better Implant Positioning and Clinical Outcomes With a Morphometric Unicompartmental Knee Arthroplasty. Results of a Retrospective, Matched-Controlled Study","volume":"34","author":"Escudier","year":"2019","journal-title":"J Arthroplasty."},{"key":"bib12-20250526","doi-asserted-by":"crossref","first-page":"278","DOI":"10.1097\/00003086-198708000-00037","article-title":"Unicompartmental arthroplasty of the knee. Postoperative alignment and its influence on overall results","volume":"221","author":"Kennedy","year":"1987","journal-title":"Clin Orthop Relat Res."},{"issue":"1","key":"bib13-20250526","doi-asserted-by":"crossref","first-page":"3","DOI":"10.1186\/s43019-024-00210-z","article-title":"Minimal clinically important difference (MCID), substantial clinical benefit (SCB), and patient-acceptable symptom state (PASS) in patients who have undergone total knee arthroplasty: a systematic review","volume":"36","author":"Migliorini","year":"2024","journal-title":"Knee Surg Relat Res."},{"issue":"6","key":"bib14-20250526","doi-asserted-by":"crossref","first-page":"461","DOI":"10.1016\/j.knee.2012.09.017","article-title":"Does body mass index affect the outcome of unicompartmental knee replacement?","volume":"20","author":"Murray","year":"2013","journal-title":"Knee."},{"issue":"3","key":"bib15-20250526","doi-asserted-by":"crossref","first-page":"645","DOI":"10.1007\/s00167-015-3597-5","article-title":"Obesity has no effect on outcomes following unicompartmental knee arthroplasty","volume":"25","author":"Plate","year":"2017","journal-title":"Knee Surg Sports Traumatol Arthrosc."},{"issue":"20","key":"bib16-20250526","doi-asserted-by":"crossref","first-page":"1691","DOI":"10.2106\/JBJS.15.01060","article-title":"Five-Year Survival of 20,946 Unicondylar Knee Replacements and Patient Risk Factors for Failure: An Analysis of German Insurance Data","volume":"98","author":"Jeschke","year":"2016","journal-title":"J Bone Joint Surg Am."},{"issue":"3","key":"bib17-20250526","doi-asserted-by":"crossref","first-page":"456","DOI":"10.1016\/j.arth.2014.10.016","article-title":"Obesity, morbid obesity and their related medical comorbidities are associated with increased complications and revision rates after unicompartmental knee arthroplasty","volume":"30","author":"Kandil","year":"2015","journal-title":"J Arthroplasty."},{"issue":"8","key":"bib18-20250526","doi-asserted-by":"crossref","first-page":"1064","DOI":"10.1302\/0301-620X.95B8.31370","article-title":"Obesity has no adverse effect on the outcome of unicompartmental knee replacement at a minimum follow-up of seven years","volume":"95-B","author":"Cavaignac","year":"2013","journal-title":"Bone Joint J."},{"issue":"2","key":"bib19-20250526","first-page":"59","article-title":"Unicompartmental knee arthroplasty: long-term success in middle-age and obese patients","volume":"14","author":"Tabor","year":"2005","journal-title":"J Surg Orthop Adv."},{"issue":"5","key":"bib20-20250526","doi-asserted-by":"crossref","first-page":"369","DOI":"10.1055\/s-0031-1299666","article-title":"Unicompartmental knee arthroplasty: factors influencing the outcome","volume":"25","author":"Xing","year":"2012","journal-title":"J Knee Surg."},{"issue":"2","key":"bib21-20250526","doi-asserted-by":"crossref","first-page":"328","DOI":"10.1016\/j.arth.2008.01.287","article-title":"Unicompartmental Knee Arthroplasty: Implant Survival and Risk Factors for Implant Failure at 11-Year Follow-up","volume":"23","author":"Bonutti","year":"2008","journal-title":"J Arthroplasty."},{"issue":"3","key":"bib22-20250526","doi-asserted-by":"crossref","first-page":"639","DOI":"10.1007\/s00167-014-3464-9","article-title":"Outcomes and survivorship of unicondylar knee arthroplasty in patients with severe deformity","volume":"25","author":"Seng","year":"2017","journal-title":"Knee Surg Sports Traumatol Arthrosc."},{"issue":"3","key":"bib23-20250526","doi-asserted-by":"crossref","first-page":"986","DOI":"10.1007\/s00167-022-07132-x","article-title":"Impact of age on unicompartmental knee arthroplasty outcomes: a systematic review and meta-analysis","volume":"31","author":"Salman","year":"2023","journal-title":"Knee Surg Sports Traumatol Arthrosc."},{"issue":"10","key":"bib24-20250526","doi-asserted-by":"crossref","first-page":"3153","DOI":"10.1016\/j.arth.2018.06.014","article-title":"Age and Outcomes of Medial Meniscal-Bearing Unicompartmental Knee Arthroplasty","volume":"33","author":"Kennedy","year":"2018","journal-title":"J Arthroplasty."},{"issue":"23","key":"bib25-20250526","doi-asserted-by":"crossref","first-page":"e96","DOI":"10.2106\/JBJS.21.00981","article-title":"Convincing Evidence to Rethink Indications for Unicompartmental Knee Arthroplasty: Commentary on an article by Seper Ekhtiari, MD, et al.: \u201cUnicompartmental Knee Arthroplasty: Survivorship and Risk Factors for Revision. A Population-Based Cohort Study with Minimum 10-Year Follow-up.\u201d","volume":"103","author":"Balkissoon","year":"2021","journal-title":"J Bone Jt Surg."},{"issue":"23","key":"bib26-20250526","doi-asserted-by":"crossref","first-page":"2170","DOI":"10.2106\/JBJS.21.00346","article-title":"Unicompartmental Knee Arthroplasty: Survivorship and Risk Factors for Revision: A Population-Based Cohort Study with Minimum 10-Year Follow-up","volume":"103","author":"Ekhtiari","year":"2021","journal-title":"J Bone Joint Surg Am."},{"issue":"4","key":"bib27-20250526","doi-asserted-by":"crossref","first-page":"525","DOI":"10.1016\/j.arth.2006.04.030","article-title":"Total knee arthroplasty in young active patients using a highly congruent fully mobile prosthesis","volume":"22","author":"Morgan","year":"2007","journal-title":"J Arthroplasty."},{"key":"bib28-20250526","doi-asserted-by":"crossref","first-page":"22","DOI":"10.1097\/00003086-199811000-00005","article-title":"Total knee arthroplasty in patients 55 years old or younger. 10- to 17-year results","volume":"356","author":"Duffy","year":"1998","journal-title":"Clin Orthop Relat Res."},{"issue":"1","key":"bib29-20250526","doi-asserted-by":"crossref","first-page":"61","DOI":"10.1007\/s11999-011-1961-4","article-title":"No long-term difference between fixed and mobile medial unicompartmental arthroplasty","volume":"470","author":"Parratte","year":"2012","journal-title":"Clin Orthop Relat Res."},{"issue":"3","key":"bib30-20250526","doi-asserted-by":"crossref","first-page":"1018","DOI":"10.1016\/j.knee.2020.02.018","article-title":"Minimum 10-year outcomes of a fixed bearing all-polyethylene unicompartmental knee arthroplasty used to treat medial osteoarthritis","volume":"27","author":"Bruce","year":"2020","journal-title":"Knee."}],"container-title":["Journal of Bone and Joint Surgery"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.ovid.com\/10.2106\/JBJS.24.01087","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T13:45:05Z","timestamp":1787751905000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.ovid.com\/10.2106\/JBJS.24.01087"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,4,2]]},"references-count":30,"journal-issue":{"issue":"10","published-print":{"date-parts":[[2025]]}},"URL":"https:\/\/doi.org\/10.2106\/jbjs.24.01087","relation":{},"ISSN":["0021-9355","1535-1386"],"issn-type":[{"value":"0021-9355","type":"print"},{"value":"1535-1386","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,4,2]]}}}