ArticleClinical biomechanics (Bristol, Avon)2012
Kinematics and early migration in single-radius mobile- and fixed-bearing total knee prostheses.
Article in Clinical biomechanics (Bristol, Avon), 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 3 of them syntheses that pooled it.
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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.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
13 citing papers in PubMed, 3 syntheses or guidelines pooled it.
- Mobile-bearing versus fixed-bearing total knee arthroplasty: a meta-analysis of randomized controlled trials.European journal of orthopaedic surgery & traumatology : orthopedie traumatologie · 2022Pooled it
- Why are patients dissatisfied following a total knee replacement? A systematic review.International orthopaedics · 2020Pooled it
- Adherence of hip and knee arthroplasty studies to RSA standardization guidelines. A systematic review.Acta orthopaedica · 2014Pooled it
- Migration of all-polyethylene compared with metal-backed tibial components in cemented total knee arthroplasty.Acta orthopaedica · 2018Trial
- Migration and clinical outcome of mobile-bearing versus fixed-bearing single-radius total knee arthroplasty.Acta orthopaedica · 2018Trial
- Trial
- Kinematic Evaluation of the GMK Sphere Implant During Gait Activities: A Dynamic Videofluoroscopy Study.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2019Observational
- No differences between fixed- and mobile-bearing total knee arthroplasty.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2017Review
- A randomized RSA study concentrating especially on continuous migration.Acta orthopaedica · 2016Article
- [Individualized total knee arthroplasty].Der Orthopade · 2015Article
- Article
- Kinematics of a highly congruent mobile-bearing total knee prosthesis.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2012Article
- Does a new knee design perform as well as the design it replaces?Bone & joint research · 2012Article
Corrections and comments
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe mobile-bearing variant of a single-radius design is assumed to provide more freedom of motion compared to the fixed-bearing variant because the insert does not restrict the natural movements of the femoral component. This would reduce the contact stresses and wear which in turn may have a positive effect on the fixation of the prosthesis to the bone and thereby decreases the risk for loosening. The aim of this study was to evaluate early migration of the tibial component and kinematics of a mobile-bearing and fixed-bearing total knee prosthesis of the same single-radius design.
methodsTwenty Triathlon single-radius posterior-stabilized knee prostheses were implanted (9 mobile-bearing and 11 fixed-bearing). Fluoroscopy and roentgen stereophotogrammetric analysis (RSA) were performed 6 and 12 months post-operatively.
findingsThe 1 year post-operative RSA results showed considerable early migrations in 3 out of 9 mobile-bearing patients and 1 out of 11 fixed-bearing patients. The range of knee flexion was the same for the mobile-bearing and fixed-bearing group. The mobile insert was following the femoral component during motion.
interpretationDespite the mobile insert following the femoral component during motion, and therefore performing as intended, no kinematic advantages of the mobile-bearing total knee prosthesis were seen. The fixed-bearing knee performed as good as the mobile-bearing knee and maybe even slightly better based on less irregular kinematics and less early migrations.
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Registered trials
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