Prosthesis with low stiffness factor

Details Prosthesis with low stiffness factor Prosthesis with low stiffness factor

1992-04-20

1993-01-05

Frinks, Ronald

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

Implantable prosthesis

Bone

623 16, 623 18, A61F 238, A61F 230

Patent

active

051767104

ABSTRACT:
An orthopaedic device designed to replace an articulating surface in a joint is provided. The device has a relatively low stiffness factor and is capable of applying normal physiological load onto the underlying bone. A low stiffness factor is achieved by a relatively thin device made from materials that have a low bulk modulus of elasticity. The device is provided with curvature to minimize bending stress in the device so that the device has sufficient mechanical strength to prevent stress induced failure. A tibial component made in accordance with this invention is also provided.

REFERENCES:
patent: Re29757 (1978-09-01), Helfet
patent: 3986212 (1976-10-01), Sauer
patent: 4164794 (1979-08-01), Spector et al.
patent: 4195368 (1980-04-01), Patrichi
patent: 4502161 (1985-03-01), Wall
patent: 4662887 (1987-05-01), Turner et al.
patent: 4769040 (1988-09-01), Wevers
patent: 4778472 (1988-10-01), Homsy et al.
patent: 4808185 (1989-02-01), Penenberg et al.

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