ArticleProceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine2017
The mechanical response of a polyetheretherketone femoral knee implant under a deep squatting loading condition.
Article in Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed, 40 citations in OpenAlex.
- A Comprehensive AI Framework for Superior Diagnosis, Cranial Reconstruction, and Implant Generation for Diverse Cranial Defects.Bioengineering (Basel, Switzerland) · 2025Article
- Hypoallergenic Knee Implant Usage and Clinical Outcomes: Are They Safe and Effective?Arthroplasty today · 2024Article
- Article
- The Effects of Different Femoral Component Materials on Bone and Implant Response in Total Knee Arthroplasty: A Finite Element Analysis.Materials (Basel, Switzerland) · 2023Article
- Assessing biocompatibility & mechanical testing of 3D-printed PEEK versus milled PEEK.Heliyon · 2022Article
- Article
- Migration of the femoral component and clinical outcomes after total knee replacement: a narrative review.Musculoskeletal surgery · 2021Review
- The Effects of Cyclic Loading and Motion on the Implant-Cement Interface and Cement Mantle of PEEK and Cobalt-Chromium Femoral Total Knee Arthroplasty Implants: A Preliminary Study.Materials (Basel, Switzerland) · 2020Article
- Third Body Wear of UHMWPE-on-PEEK-OPTIMA™.Materials (Basel, Switzerland) · 2020Article
- Statistical Modeling of Lower Limb Kinetics During Deep Squat and Forward Lunge.Frontiers in bioengineering and biotechnology · 2020Article
- The evolution of patellofemoral prosthetic design in total knee arthroplasty: how far have we come?EFORT open reviews · 2019Review
Corrections and comments
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Authors and funding
4 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The current study was designed to investigate the mechanical response of a polyetheretherketone-on-polyethylene total knee replacement device during a deep squat. Application of this high-demand loading condition can identify weaknesses of the polyetheretherketone relative to cobalt-chromium. This study investigated whether the implant is strong enough for this type of loading, whether cement stresses are considerably changed and whether a polyetheretherketone femoral component is likely to lead to reduced periprosthetic bone loss as compared to a cobalt-chromium component. A finite element model of a total knee arthroplasty subjected to a deep squat loading condition, which was previously published, was adapted with an alternative total knee arthroplasty design made of either polyetheretherketone or cobalt-chromium. The maximum tensile and compressive stresses within the implant and cement mantle were analysed against their yield and fatigue stress levels. The amount of stress shielding within the bone was compared between the polyetheretherketone and cobalt-chromium cases. Relative to its material strength, tensile peak stresses were higher in the cobalt-chromium implant; compressive peak stresses were higher in the polyetheretherketone implant. The stress patterns differed substantially between polyetheretherketone and cobalt-chromium. The tensile stresses in the cement mantle supporting the polyetheretherketone implant were up to 33% lower than with the cobalt-chromium component, but twice as high for compression. Stress shielding was reduced to a median of 1% for the polyetheretherketone implant versus 56% for the cobalt-chromium implant. Both the polyetheretherketone implant and the underlying cement mantle should be able to cope with the stress levels present during a deep squat. Relative to the cobalt-chromium component, stress shielding of the periprosthetic femur was substantially less with a polyetheretherketone femoral component.
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