Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis – Bone
Patent
1989-10-31
1991-04-02
Isabella, David J.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
Bone
A61F 236
Patent
active
050044761
ABSTRACT:
Hip joint prosthesis for replacing diseased or defective joints including a femoral stem, vacuum cast of cobalt-chromium-molybdenum and hot isostatically pressed (HIP'd) both before and after porous coating to provide an additional 50% greater strength in high cycle fatigue loading than all comparable porous coated devices of prior art, with optimal porous coating parameters scientifically and clinically determined for 75% greater fixation than all comparable devices of prior art, anatomically shaped and easily constructed in right and left configurations and a range of sizes, a femoral head which attaches to the stem intraoperatively, and an acetabular component consisting of a polymer bearing-type insert mechanically fixed inside a metal shell, the bearing surface articulating with the femoral head.
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An article entitled "Interface Mechanics and Bone Growth into Porous Co-Cr-Mo Alloy Implants", by Cook et al.; Clinical Orthopedics, Mar. 1985; vol. 813, pp. B-1 to B-10.
"The Total System", Brochure published by Zimmer, pp. 1-23.
Isabella David J.
Tulane University
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