Trial reportClinical biomechanics (Bristol, Avon)2007
Sagittal curvature of total knee replacements predicts in vivo kinematics.
Trial report in Clinical biomechanics (Bristol, Avon), 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 1 of them a synthesis that pooled it.
What it found
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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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
25 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Comparison of Single-Radius with Multiple-Radius Femur in Total Knee Arthroplasty: A Meta-Analysis of Prospective Randomized Controlled Trials.Orthopaedic surgery · 2022Pooled it
- Analysis of knee functional flexion axis in navigated TKA: identification and repeatability before and after implant positioning.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2014Trial
- The Correlation between Objective Ligament Laxity and the Clinical Outcome of Mechanically Aligned TKA.Journal of clinical medicine · 2023Article
- Variation of the Three-Dimensional Femoral J-Curve in the Native Knee.Journal of personalized medicine · 2021Article
- Gender difference exists in sagittal curvature of the distal femoral condyle morphology for osteoarthritic population.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2020Article
- No clinical differences at the 2-year follow-up between single radius and J-curve medial pivot total knee arthroplasty in the treatment of neutral or varus knees.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2020Article
- Alterations of kinematics in knees after single versus multiple radius femoral prostheses total knee arthroplasty: a retrospective study.BMC musculoskeletal disorders · 2020Article
- Better quadriceps and hamstring strength is achieved after Total knee Arthroplasty with single radius femoral prostheses: a retrospective study based on isokinetic and isometric data.Arthroplasty (London, England) · 2020Article
- Motion type and knee articular conformity influenced mid-flexion stability of a single radius knee prosthesis.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2019Article
- Tibio-Femoral Contact Force Distribution is Not the Only Factor Governing Pivot Location after Total Knee Arthroplasty.Scientific reports · 2019Article
- Improvement in hamstring and quadriceps muscle strength following cruciate-retaining single radius total knee arthroplasty.Annals of translational medicine · 2017Article
- Change in collateral ligament length and tibiofemoral movement following joint line variation in TKA.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2016Article
- No differences in functional results and quality of life after single-radius or multiradius TKA.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2016Article
- A randomized RSA study concentrating especially on continuous migration.Acta orthopaedica · 2016Article
- Is Single-Radius Design Better for Quadriceps Recovery in Total Knee Arthroplasty?Knee surgery & related research · 2015Article
- Review
- Strong correlation between the morphology of the proximal femur and the geometry of the distal femoral trochlea.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2014Article
- Can TKA design affect the clinical outcome? Comparison between two guided-motion systems.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2014Article
- Design and kinematics in total knee arthroplasty.International orthopaedics · 2014Article
- The effect of geometric variations in posterior-stabilized knee designs on motion characteristics measured in a knee loading machine.Clinical orthopaedics and related research · 2014Article
Corrections and comments
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundIt is known that in vivo kinematics after total knee replacement is influenced by the design of the implant. The goal of this study was to show that the sagittal curvature of two different knee prostheses differing in geometric design predicts their in vivo motion behavior.
methodsThree-dimensional tibio-femoral displacements of two prosthesis designs (single radius vs. dual radius) were measured during knee extension under weight bearing conditions by in vivo video fluoroscopy. Finite helical axes were computed to represent the tibio-femoral motions. Angular deviation alpha and the spatial localization deviation delta were used to characterize the motions. Angular deviation is the angle between each incremental finite helical axis and the medio-lateral axis of the femoral component of the prosthesis. The spatial localization deviation is the distance between each finite helical axis and the center of the femoral component of the prosthesis. Statistical comparisons were performed using the median and the interquartile range of the angular deviation and the spatial localization deviation.
findingsThe single-radius design showed finite helical axes concentrated at a single axis near to the medio-lateral axis of the femoral component. The angular and spatial localization deviation of the dual radius design were larger compared to the single radius design, exhibiting finite helical axes varying between two axes.
interpretationVideo fluoroscopy in combination with finite helical axis analysis proved to be suitable methods to evaluate the in vivo kinematical behavior of total knee arthroplasty, which can be useful for implant designers. Knowledge of in vivo kinematics can also provide surgeons with more background information about the total knee arthroplasty models they implant.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.