ArticleKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA2016
Finite element analysis: a comparison of an all-polyethylene tibial implant and its metal-backed equivalent.
Article in Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed, 26 citations in OpenAlex.
- [The influence of articular surface conformity on the biomechanics of rotating hinge knee prostheses].Sheng wu yi xue gong cheng xue za zhi = Journal of biomedical engineering = Shengwu yixue gongchengxue zazhi · 2026Article
- Fracture Line Morphology and a Novel Classification of Pilon Fractures.Orthopaedic surgery · 2025Article
- Biomechanical comparison of all-polyethylene total knee replacement and its metal-backed equivalent on periprosthetic tibia using the finite element method.Journal of orthopaedic surgery and research · 2024Article
- Medial-lateral translational malalignment of the prosthesis on tibial stress distribution in total knee arthroplasty: A finite element analysis.Frontiers in bioengineering and biotechnology · 2023Article
- The application of an isotropic crushable foam model to predict the femoral fracture risk.PloS one · 2023Article
- Comparison of two coracoid process transfer techniques on stress shielding using three-dimensional finite-element model.Journal of orthopaedic surgery and research · 2022Article
- Design of Porous Metal Block Augmentation to Treat Tibial Bone Defects in Total Knee Arthroplasty Based on Topology Optimization.Frontiers in bioengineering and biotechnology · 2021Article
- A modelling approach demonstrating micromechanical changes in the tibial cemented interface due to in vivo service.Journal of biomechanics · 2017Article
- All-polyethylene tibial components in distal femur limb-salvage surgery: a finite element analysis based on promising clinical outcomes.Journal of orthopaedic surgery and research · 2017Article
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Authors and funding
4 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeThe hypothesis of this study is that all-polyethylene (APE) tibial implants offer a biomechanical profile similar to metal-backed tray (MBT). There are significant financial implications, in selected patient groups, if APE can be deemed to perform as well as MBT.
methodsUsing a finite element analysis of CAD models provided by DePuy (Leeds), stress distributions were investigated for both an APE and MBT tibial implant. The performance was assessed for cancellous bone at 700 MPa (normal) and at 350 MPa (less stiff). Plots were recorded along the length of the tibia, showing the loads carried by the bone (cortical and cancellous), the implant interface, cement interface and the stem. von Mises stress distributions and percentage volumes were used to assess bone resorption and hence potential for failure (fracture).
resultsHigher stress shielding (resorption) occurred around the keel and stem of the MBT revealing greater potential for bone loss in these areas. APE had no areas of bone resorption (being more flexible resulting in less stress shielding). The stiffer MBT carries a higher proportion of the load down the stem. MBT stress in cancellous bone is lower than APE, as load is distributed to the cortical rim. APE has a marginally favourable strain state in cancellous bone and spreads loads more at the cement interface than MBT.
conclusionModern-day APE bearings may be superior to previously designed implants due to improvements in manufacturing. In the correct patient group, this could offer substantial cost savings.
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