An Investigation on the Corrosion Susceptibilities of Multi-Alloy Total Hip Replacements.

The design of new prosthetic devices with dissimilar metals or alloys in direct physical contact is now being investigated. Previously, the use of dissimilar alloys for the construction of surgical implants has been strongly discouraged because of the opinion that the combinations of alloys was likely to provoke more rapid corrosion of one alloy. With the advent of electrochemical corrosion analyses, accurate predictions can now be made as to the corrosion susceptibilities of materials thus permitting combinations to be considered.Presently there is a design for a total hip replacement prosthesis which combines titanium-aluminum-vanadium and cobalt-chromium-molybdenum surgical alloys in contact. There are several mechanical design considerations that indicate such a design to be favorable. For example, fatigue strength of the titanium-base alloy is higher than that of the cobalt alloy; whereas the wear resistance of the cobalt alloy is superior to the titanium alloy. For these and other reasons, applications of the titanium alloy for the femoral stem and a cobalt alloy for the femoral head have been established.

Level thesis:degree_level

Thesis

Year

1980

Author dc:creator

• Lucas, Linda Chambers

• Corrosion
• Titanium-aluminum-vanadium
• Prosthesis
• Titanium alloy
• Cobalt-chromium-molybdenum surgical alloys

Repository record dc:identifier

https://digitalcommons.library.uab.edu/etd-collection/7126

OAI identifier oai:identifier

oai:digitalcommons.library.uab.edu:etd-collection-8118