Journal
HIP INTERNATIONAL
Volume 25, Issue 3, Pages 227-231Publisher
WICHTIG PUBLISHING
DOI: 10.5301/hipint.5000215
Keywords
Hip; Wear; Bearing surface; Retrieval analysis; Material loss
Categories
Funding
- Engineering and Physical Sciences Research Council [EP/I033424/1] Funding Source: researchfish
- EPSRC [EP/I033424/1] Funding Source: UKRI
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Detailed visual inspection of metal hips is the first step in retrieval analysis. In this study a systematic visual inspection protocol was developed to quantify bearing surface changes and their associations with material loss was investigated. Simple and multiple linear regression models found that moderate surface scratching, discolouration, haziness and the size of visible wear scars were all significantly associated with material loss (R-2 = 5%-73%, p<0.05). Visual inspection is not a substitute for measurement of material loss but an understanding of bearing surface changes may offer unique clues as to the mechanisms of failure of retrieved hips.
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