Systems and methods for providing a tibial baseplate system
View Patent ↗A tibial baseplate system is described. While the system can include any suitable component, in some instances, it includes tibial baseplate having a first and second surface, the second surface being substantially opposite to the first surface, which is configured to be seated on a resected surface at a proximal end of a tibia. In some cases, the baseplate also includes a first spacer coupling that is configured to couple a first spacer to at least one of a lateral side and a medial side of the baseplate such that the spacer is disposed between, and is configured to maintain a set minimal distance between, the proximal end of the tibia and a distal end of a femur when the tibial baseplate is seated on the resected surface at the proximal end of the tibia and the spacer is coupled to the tibial baseplate. Other implementations are discussed.
1. A tibial baseplate system, comprising:
a tibial baseplate having:
a first surface that is configured to be seated on a tibia;
a second surface;
an anterior end portion;
a posterior end portion;
a lateral side portion; and
a medial side portion; and
a cutting block guide that runs from the anterior end portion towards the posterior end portion at the second surface of the tibial baseplate, wherein the cutting block guide is configured to slidingly couple to a femoral cutting block,
wherein the tibial baseplate further comprises a spacer guide that extends from the anterior end portion of the tibial baseplate toward the posterior end portion, the spacer guide being configured to slidingly couple with a spacer block having a coupler that is configured to slidingly couple with the spacer guide.
2. The tibial baseplate system of claim 1 , wherein the cutting block guide comprises an elongated groove that is defined in the second surface and that opens from the anterior end portion of the tibial baseplate.
3. The tibial baseplate system of claim 2 , wherein the elongated groove comprises a keyed elongated groove that comprises a narrowed opening defined by the second surface that is configured to prevent a coupler of the femoral cutting block from being lifted from a portion of the cutting block guide when the coupler of the femoral cutting block is disposed in the keyed elongated groove.
4. The tibial baseplate system of claim 1 , wherein the spacer guide comprises a first catch that is configured to selectively catch and retain the spacer block at a set position with respect to the tibial baseplate.
5. The tibial baseplate system of claim 1 , further comprising an alignment rod block defining an opening that is configured to receive an alignment rod, wherein the alignment rod block comprises a coupler that is configured to slidingly couple the alignment rod block with the cutting block guide.
6. The tibial baseplate system of claim 1 , further comprising a gap resection block that comprises a first coupler that is configured to slidingly couple the gap resection block with the cutting block guide, and wherein the gap resection block further comprises a second coupler that is configured to couple the gap resection block to the femoral cutting block.
7. The tibial baseplate system of claim 1 , wherein the anterior end portion of the tibial baseplate is configured to extend anteriorly more than 5 mm past an anterior end of a resected surface at a proximal end of the tibia when the tibial baseplate is seated on and coupled to the resected surface.
8. The tibial baseplate system of claim 1 , wherein the anterior end portion of the tibial baseplate comprises an elongated tongue that extends more than 1 cm from an anterior-most end of the spacer guide.
9. A tibial baseplate system, comprising:
a tibial baseplate having:
a first surface that is configured to be seated on a tibia;
a second surface;
an anterior end portion;
a posterior end portion;
a lateral side portion; and
a medial side portion;
a cutting block guide that runs from the anterior end portion towards the posterior end portion at the second surface of the tibial baseplate, wherein the cutting block guide is configured to slidingly couple to a femoral cutting block;
a first spacer guide that is disposed at the medial side portion of the tibial baseplate and that is configured to slidingly couple a first spacer block to the second surface; and
a second spacer guide that is disposed at the lateral side portion of the tibial baseplate and that is configured to slidingly couple a second spacer block to the second surface.
10. The tibial baseplate system of claim 9 , further comprising the first spacer block and the second spacer block, wherein the first spacer block is either: (i) shorter or (ii) taller than the second spacer block.
11. The tibial baseplate system of claim 9 , wherein the cutting block guide is disposed between, and runs substantially parallel with, the first spacer guide and the second spacer guide.
12. The tibial baseplate system of claim 9 , wherein the cutting block guide comprises an elongated groove that is defined in the second surface and that opens from the anterior end portion of the tibial baseplate, and wherein the elongated groove comprises a keyed elongated groove that comprises a narrowed opening defined by the second surface that is configured to prevent a coupler of the cutting block guide from being lifted from a portion of the cutting block guide when the coupler of the femoral cutting block is disposed in the keyed elongated groove.
13. A tibial baseplate system, comprising:
a tibial baseplate having:
a first surface that is configured to be seated on a tibia;
a second surface;
an anterior end portion;
a posterior end portion;
a lateral side portion; and
a medial side portion;
a cutting block guide comprising a first elongated groove that runs from the anterior end portion towards the posterior end portion at the second surface of the tibial baseplate, wherein the cutting block guide is configured to slidingly couple to a femoral cutting block;
a first spacer guide comprising a second elongated groove that is defined at the medial side portion of the tibial baseplate and that is configured to slidingly couple a first spacer block to the second surface; and
a second spacer guide comprising a third elongated groove that is defined at the lateral side portion of the tibial baseplate and that is configured to slidingly couple a second spacer block to the second surface.
14. The tibial baseplate system of claim 13 , wherein a longitudinal axis of the first elongated groove, a longitudinal axis of the second elongated groove, and a longitudinal axis of the third elongated groove each run substantially parallel with each other.
15. The tibial baseplate system of claim 13 , wherein the first spacer guide comprises a first catch that is configured to selectively retain the first spacer block in a first position along a length of the first spacer guide.
16. The tibial baseplate system of claim 13 , further comprising the first spacer block, wherein an inferior portion of the first spacer block comprises a projection that slidingly mates with the first spacer guide.
17. The tibial baseplate system of claim 15 , wherein the first catch comprises a recess, wherein an inferior portion of the first spacer block comprises a projection that slidingly mates with the first spacer guide, and wherein the projection comprises a first protrusion that is configured to engage with the first catch to selectively retain the first spacer block in the first position along a length of the first spacer guide.
18. The tibial baseplate system of claim 13 , further comprising the femoral cutting block and the first spacer block, wherein the cutting block guide is coupled to the cutting block guide, and wherein the first spacer block is coupled to the first spacer guide.
19. The tibial baseplate system of claim 13 , wherein the femoral cutting block is coupled to the cutting block guide by being coupled to a gap resection block, which is, in turn, coupled to the cutting block guide.