Knee implant rotational alignment apparatus

Details Knee implant rotational alignment apparatus Knee implant rotational alignment apparatus

1997-11-06

1998-07-21

Milano, Michael J.

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

Implantable prosthesis

Bone

A61F 238

Patent

active

057829250

ABSTRACT:
A knee implant rotational alignment apparatus comprising a non-implantable femoral trial component having substantially the same configuration as a femoral implant, a cooperating tibial articulating trial component having two parallel guide rails protruding from the upper surface thereof, which rails engage with grooves in the lower surface of the femoral trial component, which engagement prevents rotation of the femoral trial component relative to the tibial articulating trial component in a transverse plane but allows flexion and extension rotation of both components, a tibial trial baseplate having an outer periphery substantially identical to the outer periphery of a tibial implant baseplate of corresponding size, which baseplate accommodates a spring clip activator the rotation of which facilitates selection of the rotational alignment of the prosthesis.

REFERENCES:
patent: 5480446 (1996-01-01), Goodfellow
patent: 5683469 (1997-11-01), Johnson
patent: 5690636 (1997-11-01), Wildgoose
patent: 5702463 (1997-12-01), Pothier
patent: 5733290 (1998-03-01), McCue
patent: 5735904 (1998-04-01), Pappas

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