Mobile bearing knee

Details Mobile bearing knee Mobile bearing knee

1993-03-29

1994-10-25

Isabella, David

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

Implantable prosthesis

Bone

A61F 238

Patent

active

053585305

ABSTRACT:
A prosthetic mobile bearing knee 10 including a femoral implant 12 having condyle sections 22 attached to a femur 14 and a tibial tray implant 16 having a plateau 38 attached to a tibia 18. The tibial tray implant 16 has a pair of spaced apart, concavely curved plateau bearing surfaces 40 for cooperation and sliding with convexly curved surfaces 33 on a tibial bearing 20. The tibial tray plateau bearing surfaces 40 are shaped to create a gradually increasing resistance to sliding and rotational movement of the tibial bearing 20. The tibial bearing 20 that interfits between the femoral and tibial tray implants is constructed in one or two portions.

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patent: 4568348 (1986-02-01), Johnson et al.
patent: 4586933 (1986-05-01), Shoji et al.
patent: 4728332 (1988-03-01), Albrektsson
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patent: 5047057 (1991-09-01), Lawes
patent: 5080675 (1992-01-01), Lawes et al.
patent: 5116376 (1992-05-01), May
patent: 5171283 (1992-12-01), Pappas et al.

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