Prosthetic knee tibial component with axially ribbed keel and ap

Details Prosthetic knee tibial component with axially ribbed keel and ap Prosthetic knee tibial component with axially ribbed keel and ap

1993-11-15

1994-10-18

Shay, Randy C.

Surgery

Instruments

Orthopedic instrumentation

606 86, 623 20, A61F 504

Patent

active

053564146

ABSTRACT:
A tibial component of a prosthetic knee implant has a tibial tray, a post extending axially downwardly from a generally laterally central location beneath the tibial tray, and a keel including flanges extending laterally outwardly from the post and making an angle with one another so as to be directed toward relatively denser portions of the bone of the proximal tibia, and a plurality of ribs extending axially along each flange and spaced laterally from one another along the flange for enhancing the affixation and stability of the tibial component when implanted in the proximal tibia. Apparatus for preparing the proximal tibia for the reception of the tibial component includes a tibial punch and a tower selectively located at the proximal tibia, the tower having an axially extending guide bushing for placement above the proximal tibia and a channel extending laterally into the guide bushing for enabling the tibial punch to be inserted laterally into the guide bushing and then moved axially downwardly into the proximal tibia, while guided by the guide bushing, to establish a cavity in the proximal tibia for reception of the tibial component.

REFERENCES:
patent: 5163940 (1992-11-01), Bourgue

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