Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis – Bone
Patent
1991-07-08
1993-11-02
Isabella, David
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
Bone
623 66, A61F 228
Patent
active
052580300
ABSTRACT:
Orthopaedic implants exhibiting improved fatigue strength are disclosed. By forming a plurality of nodules on the surface of an implant and depositing a porous coating onto the surface of these nodules, the fatigue strength of implants such as those made from .alpha.+.beta. titanium alloys, e.g., Ti-6Al-4V alloy is substantially improved. The present invention provides a novel geometry which substantially reduces the stress concentration factor created by the interfacial geometry of conventional porous coatings. Methods of manufacturing porous coated orthopaedic implants are also disclosed.
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patent: 5007931 (1991-04-01), Smith
patent: 5030233 (1991-07-01), Ducheyne
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Ducheyne Paul
Wolfarth Debra
Isabella David
The Trustees of the University of Pennsylvania
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