Functional performance of mobile versus fixed bearing total knee prostheses: a randomised controlled trial.
Knee Surg Sports Traumatol Arthrosc
; 20(8): 1450-5, 2012 Aug.
Article
en En
| MEDLINE
| ID: mdl-21946980
ABSTRACT
PURPOSE:
The primary goal of this study was to assess the difference in active flexion between patients with a mobile versus a fixed bearing, cruciate retaining, and total knee arthroplasty. The study was designed as a randomised controlled multi-centre trial.METHODS:
Participants were assigned to interventions by using block-stratified, random allocation. Outcome parameters were active flexion, passive flexion, and Knee Society Score (KSS). Outcome parameters were assessed preoperatively and at 3, 6, and 12 months postoperatively by an independent nurse.RESULTS:
Ninety-two patients from one centre were included, 46 in each group. Active flexion was comparable for the two groups, 99.9° for the mobile bearing group and 101° for the fixed bearing group with a baseline controlled difference of 1.0 (95% CI -3.9 to 5.8, n.s.). The Clinical KSS was comparable between the two bearing groups (Mobile 90.0 vs. fixed 92.4, n.s.). The functional KSS showed a difference that was attributable to the stair climbing subscore, which showed a difference in favour of the fixed bearing design between preoperative and 3 months (7.3 point difference; 95% CI 2.3-12.5; P = 0.005) as well as 12 months (4.8 point difference; 95% CI 0.1-9.6; P = 0.045).CONCLUSIONS:
There were no short-term differences in active flexion between fixed bearing and mobile bearing total knee arthroplasty. LEVEL OF EVIDENCE I.
Texto completo:
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Banco de datos:
MEDLINE
Asunto principal:
Diseño de Prótesis
/
Osteoartritis de la Rodilla
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Articulación de la Rodilla
/
Prótesis de la Rodilla
Tipo de estudio:
Clinical_trials
Límite:
Aged
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Año:
2012
Tipo del documento:
Article