Orthopedic prosthesis employing bone screws and cement

Details Orthopedic prosthesis employing bone screws and cement Orthopedic prosthesis employing bone screws and cement

1997-10-17

1999-08-24

Yu, Mickey

Prosthesis (i.e., artificial body members), parts thereof, or ai

Implantable prosthesis

Bone

433174, 623 20, 606101, 606106, A61F 228

Patent

active

059419113

ABSTRACT:
A prosthetic system is provided for secure mounting of a prosthetic component to a bone, and particularly to a bone that may be diseased, damaged or deteriorated. The prosthetic system includes a plurality of screws that are mounted to healthy bone stock. Each screw includes a threaded portion extending from one end and a non-threaded portion extending from the opposed end. The non-threaded portion includes a discontinuous surface configuration thereon. Ends of the screws are positioned to support the prosthetic component. The bone cement is then disposed between the prosthetic component and the bone and in surrounding relationship to portions of the screws that project from the bone. The cement surrounds and attaches to the protrusions on the screws so that the screws and the cement reinforce one another in response to loads imposed thereon during use of the prosthesis.

REFERENCES:
patent: 4285071 (1981-08-01), Nelson et al.
patent: 5336266 (1994-08-01), Caspari et al.

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