Artificial knee joint

Details Artificial knee joint Artificial knee joint

1993-11-05

1996-08-27

Isabella, David

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

Implantable prosthesis

Bone

623 18, A61F 238

Patent

active

055496849

ABSTRACT:
An artificial knee joint comprising a femur member to be secured to the distal portion of a femur and a tibia member to be secured to the proximal portion of a tibia, wherein the femur member is made of alumina ceramics or zirconia ceramics, and the tibia member is a combination of a sliding section made of high-density polyethylene and a seat section made of titanium, titanium alloy, cobalt-chromium alloy or stainless steel.
With this joint, the service life of the tibia member can be extended significantly. This disclosure also includes a modified embodiment of the above-mentioned artificial knee joint that includes reinforcing ribs with a special cross sectional shape to increase resistance against bending force applied to the femur member.

REFERENCES:
patent: 4355429 (1982-10-01), Mittelmeier et al.
patent: 4728332 (1988-03-01), Albrektsson
patent: 4959071 (1990-09-01), Brown et al.

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