Patent ID: 7182786

Claim:
A tibial component of a knee prosthesis comprising: a tibial tray having top and bottom surfaces and an axis extending between them, at least one fin extending radially outwardly along the bottom surface and projecting axially downwardly; and a tibial keel having a top end and a bottom end and an axis from the top end to the bottom end generally parallel to the tray axis, the keel having an outer surface, the keel being removably affixed to the bottom surface of the tray, the keel further comprising at least one fin extending axially along the outer surface and projecting radially outwardly, the tray and keel fins being generally axially aligned with one another from top to bottom to project as a single fin but being in axial spaced relationship so that the tray and keel fins do not contact when the keel is affixed to the bottom surface of the tray and the tray and keel are fully assembled.