Revision implant augments, systems, and methods
View Patent ↗In some embodiments, a surgical method includes creating an incision in a patient, exposing a multi-component prosthesis implanted in a patient, disassembling at least one component of the multi-component prosthesis, and coupling a first revision implant component to a first component of the multi-component prosthesis. The revision implant component has a body including at least one of a projection or an opening that is complementary to a feature of the first component of the multi-component prosthesis for coupling the revision implant component to the first component of the multi-component prosthesis.
1. A prosthesis, comprising:
a tibial stem configured to be inserted longitudinally into a tibia, the tibial stem having a tapered first opening;
a monolithic revision implant body attachable to the tibial stem, including an upper side, a bottom side, and a first leg and a second leg having opposed first and second sides, respectively, each of the first and second sides extending between the upper side and the bottom side, each of the first leg and the second leg having a respective flat end surface at an end thereof opposite from the upper side,
wherein the upper side has a planar surface, the flat end surfaces are parallel to the planar surface, the bottom side includes smoothly contoured surfaces that define a channel between the first leg and the second leg, the channel having a pair of flat channel surfaces between contoured surfaces and a single groove midway between the flat channel surfaces, wherein the groove extends into the bottom side of the channel from an approximate midpoint of the channel, and wherein the bottom side defines a second opening extending inwardly from the bottom side at an approximate midpoint within the channel and the groove,
wherein the channel and the groove extend from the first side to the second side such that the channel and the groove extend through the body, and
wherein a protrusion extends from the upper side of the body and is configured with a tapered surface to engage the first opening in the tibial stem to form a Morse taper seal between the revision implant and the tibial stem; and
a detachable tibial platform received by the channel of the revision implant body, the tibial platform having an alignment guide sized and shaped to be received by the bottom side of the revision implant body, the tibial platform having a flat bottom surface opposite the alignment guide and a pair of side members attached to the bottom surface.
2. The prosthesis of claim 1 , wherein the alignment guide is shaped to fit within the groove while a top surface of the tibial platform is received in the channel.
3. The prosthesis of claim 1 , wherein the second side of the monolithic revision implant body is separated from the first side of the monolithic revision implant body by a third side and a fourth side.
4. The prosthesis of claim 3 , where the third side and the fourth side extend between the upper side and the bottom side of the monolithic revision implant body in a non-parallel relationship.
5. The prosthesis of claim 4 , wherein the second opening has a circular cross-sectional shape.
6. The prosthesis of claim 1 , wherein the monolithic revision implant body is formed from a single piece of a material.
7. The prosthesis of claim 6 , wherein the monolithic revision implant body is formed from plasma sprayed titanium.