Prosthetic polyethylene bearing having enhanced wear properties

Details Prosthetic polyethylene bearing having enhanced wear properties Prosthetic polyethylene bearing having enhanced wear properties

1996-11-01

2000-11-14

Willse, David H.

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

Implantable prosthesis

Bone

A61F 230

Patent

active

061464260

ABSTRACT:
A prosthetic bearing element having a bearing surface is made from an ultra-high molecular weight polyethylene with a molecular weight greater than 1,000,000 with a multi-axially molecular orientation. From tests which have been applied to such material, it has been found that the wear rate is lowered and preferably the direction of one of said axial molecular orientations extends parallel with or along the length of the bearing surface.

REFERENCES:
patent: 4655769 (1987-04-01), Zachariades
patent: 4747990 (1988-05-01), Gaussens et al.
patent: 4801419 (1989-01-01), Ward et al.
patent: 5030402 (1991-07-01), Zachariades
patent: 5609638 (1997-03-01), Price et al.
"Elastic Moduli of Highly Oriented Polyoxymethylene" by C.L. Choy et al, in Polymer Engineering & Science, Nov. 1983, vol. 26, #16 pp. 910-922.

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