Patent ID: 7713306
Filing Date: 2010-05-11
Classification: A61F

Abstract:
1. A system to provide a determination of an alignment of a prosthetic bearing, the system comprising: an acetabular prosthesis having a threaded receiving bore; a trial bearing liner; a plurality of attachment passages defined by the trial bearing liner each attachment passage located at a different position from an apex of said trial bearing liner; and an attachment member having a length to pass through any one of the attachment passages and interconnect the acetabular prosthesis at said threaded receiving bore and the trial bearing liner; wherein the attachment member is moveable between a locating position and a fastened position to selectively interconnect said trial bearing liner to the acetabular prosthesis via any one of said plurality of attachment passages; wherein said trial bearing liner is only moveable to rotate around an axis defined by said attachment member in said locating position and substantially immobile relative to the acetabular prosthesis in said fastened position.