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[Fretting in modular design implant systems]
1Feldmühle Aktiengesellschaft, Produktbereich Medizintechnik, Plochingen.
Biomedizinische Technik. Biomedical Engineering
|March 1, 1993
Summary
Fretting, a wear issue in hip and knee implants, is not seen in dental implants. Ceramic implants like BIOLOX show no fretting problems, unlike modular designs with mixed materials.
Area of Science:
- Biomaterials science
- Orthopedic biomechanics
- Dental implantology
Context:
- Fretting, a form of wear, is a significant concern in load-bearing orthopedic implants, particularly those with modular designs and dissimilar material interfaces.
- The incidence and impact of fretting in hip and knee replacements are well-documented.
- Conversely, fretting has not been a reported issue in the context of dental implants.
Purpose:
- To assess the current understanding and state-of-the-art regarding fretting in load-bearing implants.
- To compare the occurrence of fretting in orthopedic implants versus dental implants.
- To evaluate the performance of ceramic materials in preventing fretting in joint replacements.
Summary:
- Fretting is a prevalent issue in modular hip and knee implants due to material combinations, leading to implant degradation.
- Dental implants have not exhibited fretting, suggesting material or design differences that confer resistance.
- Ceramic femoral heads and cups, such as BIOLOX, have demonstrated excellent fretting resistance in orthopedic applications.
Impact:
- Highlights the material and design factors contributing to fretting in orthopedic implants.
- Suggests potential for advanced ceramic materials or design principles in mitigating fretting wear.
- Provides a comparative analysis relevant to the long-term performance and material selection for both orthopedic and dental implants.