Observational studyBMJ open2026
Patient-reported outcomes and component rotation in total knee replacement: a prospective, observational study in 498 patients.
Observational study in BMJ open, 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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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectivesTo assess the relation between component rotation in total knee replacement and clinical outcomes.
designProspective, observational cohort study.
settingDeventer hospital, Deventer, The Netherlands.
participants498 adults aged 18 years and older undergoing total knee replacement.
interventionsParticipants underwent Persona posterior stabilised total knee replacement. Femoral and tibial component rotation was measured using low-dose CT scans.
main outcome measuresThe primary outcome was the change in Oxford Knee Score from baseline to 1 year, analysed in relation to femoral, tibial and combined component rotation.
resultsBinary logistic regression analysis showed no statistically significant association between femoral component rotation (OR=1.04, 95% CI 0.89 to 1.21, p=0.644), tibial component rotation (OR=0.99, 95% CI 0.94 to 1.03, p=0.467), or combined rotation (OR=0.99, 95% CI 0.95 to 1.03, p=0.552), and achievement of the minimal clinically important difference of 5 points for the 48-point Oxford Knee Score.
conclusionsThis prospective study of 498 patients undergoing total knee replacement did not provide evidence of a relation between the rotational alignment of total knee arthroplasty components and clinical outcomes. These findings do not support routine evaluation of rotational alignment as a basis for revision surgery in patients with persistent pain in the absence of mechanical problems. TRIAL REGISTRATION NUMBER: Dutch Trial registry ID: 23362.
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