Patent ID: 6869447

Claim:
A modular prosthetic knee implant system comprising: a femoral component including a pair of condylar portions and an intercondylar portion having a mounting platform; a stem member; a stem collar having a superior side and an inferior side, at least part of the superior side and at least part of the inferior side lying in separate non-parallel planes, the stem collar further having a bore extending from the superior side to the inferior side, the bore having a central longitudinal axis defining an obtuse angle with at least one of the plane of the superior side and the plane of the inferior side; an augment having a superior side and an inferior side, at least part the superior side and at least part of the inferior side lying in separate non-parallel planes, the augment having a bore extending from the superior side to the inferior side, the bore having a central longitudinal axis defining an obtuse angle with at least one of the plane of the superior side and the plane of the inferior side; and a bolt; wherein the stem collar is shaped so that the femoral component, stem member, bolt and stem collar are capable of being assembled without the augment so that the stem member is in a first fixed angular relationship with the mounting platform; wherein the stem collar and augment are shaped so that the femoral component, stem member, stem collar, bolt and augment are capable of being assembled so that the stem member is in a second fixed angular relationship with the mounting platform; and wherein in the first fixed angular relationship at least part of the superior side of the stem collar lies in a plane defining an acute angle with at least part of the mounting platform and in the second fixed angular relationship at least part of the superior side of the stem collar lies in a plane that is parallel to at least part of the mounting platform.