Material Composition and Microstructure of Femoral Shaft Plate Implants Used at the Komfo Anokye Teaching Hospital, Kath

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Author(s) Faisal Wahib Adam | Joshua Ampofo | Raphael Kumah–Ametepey
Pages 327-331
Volume 3
Issue 3
Date March, 2013
Keywords femur shaft, plate implant, material composition, microstructure

Abstract

Metallic materials designed for applications in surgical implants, must show a group of properties in which biocompatibility, mechanical strength, toughness and resistance to degradation by wear or corrosion are of primary importance. In order to reach these aims, orthopedic materials must fulfill certain requirements, usually specified in standards. These requirements include chemical composition, microstructure, and bending properties. In this paper, used and new implants from the different sources from which the hospital receive were studied to elucidate the causes of the failure. The chemical composition and microstructure of each material is analyzed. Comparative analysis was done between the implants that failed in vivo and the others that did not. One out of the three sources identified, failed in vivo. This could be attributed to the fact that, its chemical composition and grain size did not conform with the ASTM standards. Since coarse grains make a material withstand less force and high Carbon contents makes materials brittle.

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