Orthopaedic knee prosthesis having stem components with a varying number of slots

An implantable orthopaedic knee prosthesis assembly, comprising:

• a first knee stem component configured to be implanted into the intramedullary canal of a long bone that forms a knee joint of a patient, the first knee stem component comprising (i) a tapered post configured to be separately received into a tapered bore of a prosthetic knee component, the tapered post of the first knee stem component having a first post taper angle and a first post diameter, and (ii) an elongated body extending away from the tapered post and terminating at a distal tip, the elongated body having formed therein a number of flutes and a single slot extending from the distal tip toward the tapered post, and
• a second knee stem component configured to be implanted into the intramedullary canal of a long bone that forms a knee joint of a patient, the second knee stem component comprising (i) a tapered post configured to be separately received into a tapered bore of a prosthetic knee component, the tapered post of the second knee stem component having a second post taper angle that is the same as the first post taper angle and a second post diameter that is the same as the first post diameter, and (ii) an elongated body extending away from the tapered post and terminating at a distal tip, the elongated body having formed therein a number of flutes and a pair of slots extending from the distal tip toward the tapered post, the pair of slots being arranged perpendicular to one another.

An implantable orthopaedic knee prosthesis assembly, comprising:

• a tibial tray configured to be implanted into a proximal end of a tibia of the patient, the tibial tray comprising a platform with a stem post extending inferiorly from an inferior surface of the platform, the stem post having a tapered bore formed therein,
• a femoral component configured to be implanted into a distal end of a femur of the patient, the femoral component comprising (i) a bearing surface having a medial condyle surface and a lateral condyle surface, (ii) a backside surface opposite the bearing surface, and (iii) a stem post extending superiorly away from the backside surface, the stem post having a tapered bore formed therein,
• a first plurality of stem components, each of the first plurality of stem components having (i) a tapered post configured to be separately received into the tapered bore of the tibial tray and the tapered bore of the femoral component, (ii) an elongated body extending away from the tapered post and terminating at a distal tip, the elongated body having a number of flutes formed therein, (iii) a post taper angle and a post diameter that are the same as each of the other of the first plurality of stem components, and (iv) a single slot formed in the elongated body and extending from the distal tip toward the tapered post, and
• a second plurality of stem components, each of the second plurality of stem components having (i) a tapered post configured to be separately received into the tapered bore of the tibial tray and the tapered bore of the femoral component, (ii) an elongated body extending away from the tapered post and terminating at a distal tip, the elongated body having a number of flutes formed therein, (iii) a post taper angle and a post diameter that are the same as each of the other of the second plurality of stem components and the first plurality of stem components, and (iv) a pair of slots formed in the elongated body and extending from the distal tip toward the tapered post, the pair of slots being arranged perpendicular to one another.