ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2022
Similar rates of return to sports and BMI reduction regardless of age, gender and preoperative BMI as seen in matched cohort of hypoallergenic and standard Cobalt Chromium medial unicompartmental knee arthroplasty.
Article in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 2 of them syntheses that pooled it.
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Who cites it
12 citing papers in PubMed, 2 syntheses or guidelines pooled it, 17 citations in OpenAlex.
- High rate of return to low-impact physical activity or sports after total and unicompartmental knee arthroplasty: A systematic review with meta-analysis.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2026Pooled it
- Metal sensitivity in total joint arthroplasty: None of the current diagnostic tests are reliable, sensitive and specific enough to guide treatment decisions!Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2025Pooled it
- Increased inflammatory response is associated with less favorable functional results 5 years after total knee arthroplasty.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2023Trial
- Evaluation of Functional Outcomes, Survivorship and Complications of Hypoallergenic Fixed-Bearing Medial and Lateral Unicompartmental Knee Arthroplasty: A Minimum 2-Year Follow-Up.Journal of clinical medicine · 2025Article
- Robotic-Assisted Medial Unicompartmental Knee Arthroplasty Provides Better FJS-12 Score and Lower Mid-Term Complication Rates Compared to Conventional Implantation: A Systematic Review and Meta-Analysis.Journal of personalized medicine · 2024Review
- Mid-term outcomes of medial metal backed and all-polyethylene unicompartmental knee arthroplasty in obese patients: a retrospective propensity-matched analysis.Journal of orthopaedic surgery and research · 2024Article
- First Italian Experience with the Oxinium Metal-Backed Fixed-Bearing Medial Journey II Unicompartmental Knee System: Promising Short-Term Outcomes of 145 Cases.Journal of clinical medicine · 2024Article
- Learning curve of Persona Partial Knee (PPK) arthroplasty: a clinical trial.BMC musculoskeletal disorders · 2024Article
- Shift to low-impact sports and recreational activities following total knee replacement.The International journal of artificial organs · 2022Article
- Hypoallergenic unicompartmental knee arthroplasty and return to sport: comparison between Oxidized Zirconium and Titanium Niobium Nitride.Acta bio-medica : Atenei Parmensis · 2022Article
- No difference in return to amateur sports after medial and lateral unicompartmental knee arthroplasty in patients younger than 65 years.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2022Article
- High tibial osteotomy with an external fixator or unicompartmental knee arthroplasty for varus knee in young patients?Journal of orthopaedicsArticle
Corrections and comments
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Authors and funding
7 authors at 5 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeTo compare the rate of return to sports and body mass index (BMI) reduction in patients who underwent surgery for unicompartmental knee arthroplasty (UKA) with either Cobalt-Chromium (CoCr) alloy UKA or with hypoallergenic UKA, stratified by age, gender and BMI.
methodsTwo consecutive cohorts of patients with a total of 172 UKA and a minimum 2-year follow-up period were prospectively included in this comparative study. The first cohort consisted of 136 consecutive series of standard Cobalt-Chromium (CoCr Group). The second cohort consisted of 36 consecutive mobile-bearing hypoallergenic Titanium Niobium Nitride UKA, (TiNbN Group). The clinical evaluation was based on the University of California, Los Angeles (UCLA) activity scores and the High-Activity Arthroplasty Score (HAAS) evaluated on the day before surgery (T
resultsNo statistical differences were found between the groups at each follow-up, as shown by the UCLA and HAAS score (n.s.). Both groups showed a statistically significant improvement (p < 0.05) at each follow-up.
conclusionsBoth TiNbN and CoCr medial mobile-bearing UKA enabled patients to return to sports after the final follow-up, regardless of age, BMI, gender and metal sensitivity. These findings inform shared decision making and can help to manage patient expectations after surgery, in particular, in active patients with an overt metal allergy, a specific hypoallergenic implant should be considered the gold standard implant in partial knee replacement surgery. LEVEL OF EVIDENCE: Cohort Study, Level III. REGISTRATION: researchregistry6250- www.researchregistry.com .
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