Artificial articulation

Details Artificial articulation Artificial articulation

1983-03-18

1987-01-13

Apley, Richard J.

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

Implantable prosthesis

Bone

623 16, A61F 230

Patent

active

046362185

ABSTRACT:
An artificial articulation includes a socket which has a spherical inner surface, a bone head ball member which is pivotably, slidably received in the spherical inner surface of the socket, and a stem which is connected to the ball head bone member. The socket is made of polycrystal alumina porcelain, the bone head ball member is made of dense silicon nitride porcelain, and the stem is made of either silicon nitride porcelain or partially stabilized zirconia porcelain. An outer surface of the stem and outer surface of the socket are coated with first and second cover layer.

REFERENCES:
patent: 3808606 (1974-05-01), Tronzo
patent: 4051598 (1977-10-01), Sneer
patent: 4156943 (1979-06-01), Collier

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