ArticleJournal of orthopaedic surgery and research2026
A study of 500 consecutive Attune knee implants, assessing early outcomes and failure rates, a single surgeon, non-design centre study.
Article in Journal of orthopaedic surgery and research, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundThe Attune knee system was released in 2011 aiming to improving patient satisfaction rates following total knee arthroplasty. There have been few large non-design centre studies published to date. The aim of this study is to assess failure rates and patient-reported outcome measures(PROM) of the Attune knee implant in a non-design centre.
methodsWe retrospectively analysed a prospectively collected database of consecutive series of the first 500 primary, cemented, posterior stabilised, fixed bearing, Attune total knee arthroplasty cases performed by a single non-design surgeon, at one hospital. PROMs were measured as Oxford Knee Scores(OKS) and Patient's Knee Implant Performance(PKIP) questionnaires pre-operatively, 3-months post-operatively and at an average of 5.44 years (minimum 2 years) post-operatively. We recorded failure rates and examined the learning curve by comparing outcomes per 100 cases over time. The majority of cases (n = 445) were performed with the 1st generation Legacy™ tray. No patients were lost to follow-up.
resultsOf the 500 knees, mean age was 72 years. Mean follow up was 5.44 years (SD 1.62, range 2-8.9 years). The mean OKS increased post-operatively from 18.26/48 to 45.61/48. The mean PKIP increased post-operatively from 19.01/100 to 88.37/100. Both PROMs were maintained at medium-term follow up (2 years). In total there were 11 (2.2%) revisions of which three (0.6%) were revised for tibial tray loosening, two (0.4% were revised for infection, one (0.2%) for unexplained pain and five (1%) patients underwent a polyethylene liner upsizing due to instability.
conclusionsThis prospective study shows favourable early post-operative results of the Attune knee with just three patients (0.6%) being revised for tibial tray loosening. The strengths of this study include the large consecutive cohort in a non-design centre with no loss to follow-up. Further long-term follow-up is required however, this is the largest non-design centre study to our knowledge to date.
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