Metal release and corrosion effects of modular neck total hip arthroplasty.
Modular neck implants are an attractive treatment tool in total hip replacement. Concerns remain about the mechanical stability and metal ion release caused by the modular connection. Five different implant designs were investigated in an experimental set-up. In vivo conditions were simulated and the long-term titanium release was measured. Finally, the modular connections were inspected for corrosion processes and signs of fretting. No mechanical failure or excessive corrosion could be identified for the implants tested. The titanium releases measured were extremely low compared to in vivo and in vitro studies and were not in a critical range.
Kretzer
J Philippe
JP
Laboratory of Biomechanics and Implant Research, Department of Orthopaedics, University of Heidelberg, Schlierbacher Landstrasse 200A, 69117, Heidelberg, Germany. philippekretzer@web.de
Jakubowitz
Eike
E
Krachler
Michael
M
Thomsen
Marc
M
Heisel
Christian
C
D000818:Animals; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation*; D001672:Biocompatible Materials; D001696:Biomechanical Phenomena; D002417:Cattle; D006622:Hip Prosthesis; D006801:Humans; D008422:Materials Testing / Q000379:methods*; D008954:Models, Biological; D011474:Prosthesis Design; D013997:Time Factors; D014025:Titanium / Q000009:adverse effects* / Q000097:blood*
D001672:Biocompatible Materials; D014025:Titanium