Prosthetic bone joint devices

Details Prosthetic bone joint devices Prosthetic bone joint devices

1974-09-03

1976-04-13

Frinks, Ronald L.

Surgery

Truss

Pad

128 92C, 128 92E, 128 92EB, A61F 124

Patent

active

039494284

ABSTRACT:
An endoprosthetic knee joint device with separate pairs of femoral and tibial condylar runner and track components is improved in respect of bone cement fixation surfaces, mutually articulatory bearing surfaces, and securement location relative to each other and the relevant bones. The femoral components have L-shaped fixation surfaces defining a slightly obtuse angle, and the tibial component fixation surfaces are tapered. The femoral component bearing surfaces have longitudinal convex curvature of higher and lower order over respective end portions, the tibial component bearing surface has longitudinal concave curvature of lowest order, and these bearing surfaces have complementary lateral curvatures of highest order. All components have recesses at one end to engage a jig assembly which connects with the femur in predetermined relationship and locates the components relative to the natural condyles.

REFERENCES:
patent: 3837009 (1974-09-01), Walker
The Polycentric-type Total Knee(Advertisement by Zimmer--USA), The Journal of Bone & Joint Surgery, Vol. 55-A, No. 3, Apr. 1973.
Original Gunston Polycentric Total Knee(Advertisement by Promed International Inc.), The Journal of Bone & Joint Surgery, Vol. 55-A, No. 3, Apr. 1973.
U.C.I. Total Knee, (Advertisement by Wright Mfg. Co.) The Journal of Bone & Joint Surgery, Vol. 55-A, No. 3, Apr. 1973.

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