Manufacturing Conditioned Wear of All-ceramic Knee Prostheses

Denkena, Berend; Köhler, Jens; Turger, Anke; Helmecke, Patrick; Correa, Tomas A.; Hurschler, Christof

doi:10.1016/j.procir.2013.01.036

Cited by 20 publications

(6 citation statements)

References 11 publications

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“…The design of the knee implant parts complies with the international standard ISO 7207-1 [26], in which the geometry of both total and partial knee implant components is defined in detail. More specifically, for the present work, it is assumed that the total knee implant, which is designed, corresponds to the left knee of a male human with constrained rotational movement.…”

Section: Design Of the Knee Implant Componentsmentioning

confidence: 99%

Precision CNC Machining of Femoral Component of Knee Implant: A Case Study

et al. 2018

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Abstract:The design and manufacturing of medical implants constitutes an active and highly important field of research, both from a medical and an engineering point of view. From an engineering aspect, the machining of implants is undoubtedly challenging due to the complex shape of the implants and the associated restrictive geometrical and dimensional requirements. Furthermore, it is crucial to ensure that the surface integrity of the implant is not severely affected, in order for the implant to be durable and wear resistant. In the present work, the methodology of designing and machining the femoral component of total knee replacement using a 3-axis Computer Numerical Control (CNC) machine is presented, and then, the results of the machining process, as well as the evaluation of implant surface quality are discussed in detail. At first, a preliminary design of the components of the knee implant is performed and the planning for the production of the femoral component is implemented in Computed Aided Manufacturing (CAM) software. Then, three femoral components are machined under different process conditions and the surface quality is evaluated in terms of surface roughness. Analysis of the results indicated the appropriate process conditions for each part of the implant surface and led to the determination of optimum machining strategy for the finishing stage.

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Section: Design Of the Knee Implant Componentsmentioning

confidence: 99%

Precision CNC Machining of Femoral Component of Knee Implant: A Case Study

et al. 2018

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“…Sintered bioceramics can be machined only by grinding and polishing processes (Denkena et al 2013). The wear behavior of sample CoCr-PE implant pairs were tested.…”

Section: Literature Reviewmentioning

confidence: 99%

The use of single point incremental forming for customized implants of unicondylar knee arthroplasty: a review

Bhoyar

Borade

2015

Res. Biomed. Eng.

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Introduction: The implantable devices are having enormous market. These products are basically made by traditional manufacturing process, but for the custom-made implants Incremental Sheet Forming is a paramount alternative. Single Point Incremental Forming (SPIF) is a manufacturing process to form intricate, asymmetrical components. It forms the component using stretching and bending by maintaining materials crystal structure. SPIF process can be performed using conventional Computer Numerical Control (CNC) milling machine. Review: This review paper elaborates the various manufacturing processes carried on various biocompatible metallic and nonmetallic customised implantable devices. Conclusion: Ti-6Al-4V alloy is broadly used for biomedical implants, but in this alloy, Vanadium is toxic so this alloy is not compatible for implants. The attention of researchers is towards the non toxic and suitable biocompatible materials. For this reason, a novel approach was developed in order to enhance the mechanical properties of this material. The development of incremental forming technique can improve the formability of existing alloys and may meet the current strict requirements for performance of dies and punches.

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“…For bearing couple in TKA/THA and TJA, respectively, the most frequently used combination consists of cobalt-chrome (CoCr) or titanium (Ti) metal alloys articulating against Ceramics 2024, 7 311 ultrahigh-molecular-weight polyethylene (UHMWPE) and its variations [9][10][11][12][13][14][15]. Crosslinked polyethylene (XLPE) and highly cross-linked polyethylene (HXLPE), respectively, were introduced in the late 1990s to reduce wear and debris-induced osteolysis following TJA [16].…”

Section: Introductionmentioning

confidence: 99%

High-Performance Ceramics in Musculoskeletal Surgery: Current Use and Future Perspectives

Eschweiler,

Greven,

Rath

et al. 2024

Ceramics

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Osteoarthritis (OA) is a prevalent disease among the elderly population, necessitating effective treatment options. Total joint arthroplasty (TJA) is a reliable surgical procedure that has shown good long-term clinical outcomes for OA. However, certain challenges, such as implant failure caused by particle-induced aseptic loosening or hypersensitivity to metal ions, remain unresolved in TJA. High-performance ceramic implants have emerged as a promising solution to address these persistent implant-related issues. This review article provides an overview of the composition and characteristics of ceramics used in TJA, highlighting their potential advantages and associated risks. While ceramic implants have demonstrated excellent performance in vivo for hip and knee arthroplasty, their bioinert behaviour is still considered a crucial factor regarding cementless options. Therefore, novel methods are investigated that seem to be able to combine the benefits of ceramic materials with an excellent osseointegration behaviour, which makes ceramics as implant materials an even stronger option for future applications.

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Manufacturing Conditioned Wear of All-ceramic Knee Prostheses

Cited by 20 publications

References 11 publications

Precision CNC Machining of Femoral Component of Knee Implant: A Case Study

Precision CNC Machining of Femoral Component of Knee Implant: A Case Study

The use of single point incremental forming for customized implants of unicondylar knee arthroplasty: a review

High-Performance Ceramics in Musculoskeletal Surgery: Current Use and Future Perspectives

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