Endoprosthetic bone joint components

Details Endoprosthetic bone joint components Endoprosthetic bone joint components

1985-07-30

1987-05-05

Apley, Richard J.

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

Implantable prosthesis

Bone

623 20, 623 23, 128 92VV, 128 92VW, A61F 230, A61F 236, A61F 238

Patent

active

046628886

ABSTRACT:
A prosthetic component (20; 30) for replacing a region of a bone including an articular surface (12) of a joint has a first surface shaped to approximate the articular surface, and a second surface (23; 33) shaped to extend substantially perpendicularly to the principal trabecular structure (10, 11) in a section through the bone when the first surface replaces the articular surface. In the case of a long bone the second surface is preferably shaped to approximate the fused epiphyseal plate scar (15) of the bone region in question. Also the component preferably has varying elastic modulus, at least in the portion thereof bordering the second surface, to simulate that of the bone replaced thereby.

REFERENCES:
patent: 3893196 (1975-07-01), Hochman
patent: 4312079 (1982-01-01), Dorre et al.
patent: 4532660 (1985-08-01), Field
patent: 4547910 (1985-10-01), Roberts et al.
Composites, vol. 5, No. 4, Jul. 1974, pp. 151-156.
Physics in Medicine & Biology, vol. 25, No. 4, Jul. 1980, pp. 611-636.

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