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Corrosion and Corrosion Prevention in Orthopædic Implants [Summary]

Reactions at the interface between an implant and the environment of the body are of fundamental importance in determining the degree of success of the implant. In the case of orthopedic implants, one of the potentially important aspects of this interfacial reaction concerns metallic corrosion. The apparent clinical significance of corrosion is not altogether clear and many believe that corrosion is not a problem since it rarely affects the patient and, even if it does, the offending implant may easily be removed. However, since corrosion may eventually influence the functional properties of the implant, and in view of the increasing use of 'permanent' prostheses where even minor reactions could produce undesirable effects, this phenomenon must be considered. If corrosion does occur frequently and if simple and inexpensive methods of corrosion prevention are available, then they should be adopted.