ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2019
Motion type and knee articular conformity influenced mid-flexion stability of a single radius knee prosthesis.
Article in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed, 13 citations in OpenAlex.
- The Correlation between Objective Ligament Laxity and the Clinical Outcome of Mechanically Aligned TKA.Journal of clinical medicine · 2023Article
- Moderate External Rotation of Tibial Component Generates More Natural Kinematics Than Internal Rotation After Total Knee Arthroplasty.Frontiers in bioengineering and biotechnology · 2022Article
- Anatomic characteristics of the knee influence the risk of suffering an isolated meniscal injury and the risk factors differ between women and men.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2021Article
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Authors and funding
5 authors at 4 institutions in 2 countries.
Funding
Abstract
purposeSingle radius knee implants were introduced to reduce the level of paradoxical anterior femoral translation (AFT) during mid-flexion after total knee arthroplasty. Findings from clinical and experiment studies are inconsistent, which may be due to the different loading conditions and articular conformities of the knee implants studied. The aim of this study is to analyze how variations in these two factors affect the mid-flexion stability of a single radius knee prosthesis.
methodsSix daily activities (walking, stair ascent, stair descent, sit-to-stand, pivot turn and crossover turn), and three articular conformity ratios (low, moderate and high) were considered. The resulting AFTs from the 18 finite element models were analyzed.
resultsFor low conformity knees, the worst case activity (the greatest AFT) was sit-to-stand with an AFT of 6.2 mm, while for the moderate conformity the worst case was crossover turn and pivot turn. For high conformity, all activities produced a relatively small AFT ranging from 0 mm to 1.8 mm, which more closely resembles natural knee motion. In addition, no AFT was recorded during stair ascent for all three conformities (low, moderate, high).
conclusionsThis study demonstrated that the amount of AFT is highly dependent on the activity being undertaken and the articular conformity of the knee prosthesis, and the worst case activity depends on the knee conformity. The clinical relevance of this study is that it offers valuable information towards the design of improved knee prostheses and selection of knee implants for clinical use. LEVEL OF EVIDENCE: II.
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