Dual articulating total knee prosthesis

Details Dual articulating total knee prosthesis Dual articulating total knee prosthesis

1984-08-27

1986-05-06

Apley, Richard J.

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

Implantable prosthesis

Bone

128 92C, A61F 100

Patent

active

045869332

ABSTRACT:
A dual articulating total knee prosthesis comprises a femoral component, a tibial tray, and a plurality of movable inserts. The femoral component has a medial condyle, a lateral condyle, and a near anatomical curvature at a first articulating surface. The movable inserts are arranged between the femoral component and the tibial tray. These inserts provide the first articulating surface at an upper surface of the inserts in contact with the medial and lateral condyles of the femoral component. The inserts also provide the second articulating surface at a lower surface of the inserts in contact with the track of the tibial tray.
The prosthesis is able to perform near full flexion without dislocation of the inserts and with a near physiological knee motion pattern. Stress concentration at the articulating surface is also avoided.

REFERENCES:
patent: 4081866 (1978-04-01), Upshaw et al.
patent: 4085466 (1978-04-01), Goodfellow et al.
patent: 4209861 (1980-07-01), Walker et al.
patent: 4340978 (1982-07-01), Buechel et al.

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