Metal and plastic composite tibial component for knee joint

Details Metal and plastic composite tibial component for knee joint Metal and plastic composite tibial component for knee joint

1981-01-22

1985-02-26

Crowder, Clifford D.

Surgery

Truss

Pad

128 92C, 428164, 428581, A61F 103

Patent

active

045010315

ABSTRACT:
A prosthetic joint component which is comprised of a metal retainer and a plastic bearing portion which is molded integrally onto the top surface of the metal retainer. The metal retainer includes a plurality of notches spaced apart from each other around the periphery of the retainer. The notches enable the plastic, during the molding process, to flow through the notches to create a thickness of plastic completely surrounding the upper surface and the peripheral edge of the retainer (or metal base plate) and terminating in a lower plastic rim surface which is flush with the perimeter of the lower surface of the metal base plate, forming a strong mechanical interlock between the metal and plastic portions of the prosthetic joint component.

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patent: 4240162 (1980-12-01), Devas
patent: 4297993 (1981-11-01), Harle
"Plastic is Molded on Metal `Endoskeleton` to Form Top Half of Ankle Joint," Materials Engineering, Nov. 1980, p. 39.
"Multi-Radius.TM. Total Knee System," .COPYRGT.1980, Zimmer USA, Inc., Brochure B-273-1.
"The GEO-PATELLA.TM./GEO-TIBIAL.TM. Total Knee System," .COPYRGT.1977, Zimmer USA, Inc., Brochure B-263-1.

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