AI Article Synopsis
- Fretting fatigue is a significant issue for modular orthopedic implants, leading to possible mechanical failure and inflammation due to wear debris.
- A study examined how low plasticity burnishing (LPB), a surface enhancement method, can improve the resistance of these implants to fretting fatigue.
- Results showed LPB-treated specimens can endure significantly more load cycles (over 108,000) compared to untreated ones (just under 38,000), suggesting LPB can reduce wear and the need for implant revisions.
Article Abstract
Fretting fatigue is a common problem for modular orthopedic implants which may lead to mechanical failure of the implant or inflammatory tissue responses due to excessive release of wear debris. Compressive residual stresses at the contacting surfaces may alleviate the problem. Here we investigate the potential of a surface enhancement method known as low plasticity burnishing (LPB) to increase the fretting fatigue resistance of bone-anchored implants for skeletal attachment of limb prostheses. Rotation bending fatigue tests performed on LPB treated and untreated test specimens demonstrate that the LPB treatment leads to statistically significantly increased resistance to fretting fatigue (LPB treated test specimens withstood on average 108,780 load cycles as compared with 37,845 load cycles for untreated test specimens, p = 0.004). LPB treated test specimens exhibited less wear at the modular interface as compared with untreated test specimens. This surface treatment may lead to reduced risk of fretting induced component failure and a reduced need for revision of implant system componentry.
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Source |
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| http://dx.doi.org/10.1016/j.medengphy.2022.103755 | DOI Listing |
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