Acetabular cup with bi-directional steps

Details Acetabular cup with bi-directional steps Acetabular cup with bi-directional steps

1997-11-21

2000-10-31

Snow, Bruce

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

Implantable prosthesis

Bone

623 2223, A61F 234

Patent

active

06139582&

ABSTRACT:
An acetabular cup having an outer surface with a first set of steps formed in a first direction and a second set of steps formed in a different, second direction is effective to provide positional stability and enhanced load transfer after implantation in the acetabulum. The stepped outer surface of the acetabular cup provides a significant increase in effective surface area. The multi-directional first and second steps convert shear loads to compressive loads in their respective directions, resulting in enhanced fixation of the cup.

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