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- W2591986384 abstract "Background Modular junctions in total hip arthroplasties have been associated with fretting, corrosion, and debris release. The purpose of this study is to analyze damage severity in total knee arthroplasties of a single design by qualitative visual assessment and quantitative material loss measurements to evaluate implant performance and patient impact via material loss. Methods Twenty-two modular knee retrievals of the same manufacturer were identified from an institutional review board–approved database. Junction designs included tapers with an axial screw and tapers with a radial screw. Constructs consisted of 2 metal alloys: CoCr and Ti6Al4V. Components were qualitatively scored and quantitatively measured for corrosion and fretting. Negative values represent adhered material. Statistical differences were analyzed using sign tests. Correlations were tested with a Spearman rank order test (P < .05). Results The median volumetric material loss and the maximum linear depth for the total population were −0.23 mm3 and 5.84 μm, respectively. CoCr components in mixed metal junctions had higher maximum linear depth (P = .007) than corresponding Ti components. Fretting scores of Ti6Al4V alloy components in mixed metal junctions were statistically higher than the remaining groups. Taper angle did not correlate with material loss. Conclusion Results suggest that CoCr components in mixed metal junctions are more vulnerable to corrosion than other components, suggesting preferential corrosion when interfacing with Ti6Al4V. Overall, although corrosion was noted in this series, material loss was low, and none were revised for clinical metal-related reaction. This suggests the clinical impact from corrosion in total knee arthroplasty is low." @default.
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- W2591986384 date "2017-07-01" @default.
- W2591986384 modified "2023-09-30" @default.
- W2591986384 title "Assessment of Corrosion, Fretting, and Material Loss of Retrieved Modular Total Knee Arthroplasties" @default.
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- W2591986384 doi "https://doi.org/10.1016/j.arth.2017.02.047" @default.
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