Patient-specific guides
A device for an orthopedic knee procedure. The device includes a tibial drill guide having a body portion and first and second posts extending from the body portion, the first post shorter in length than the second post. The device includes a patient-specific tibial alignment guide including a body with an inner anatomy-engaging surface shaped to closely conform and mate with a corresponding tibial joint surface. The first and second guiding receptacles define first and second inner channels sized and shaped to receive the first and second posts of the tibial drill guide. The first receptacle being shorter in length than the second receptacle, such that when the alignment guide is mounted on the tibial joint surface and the drill guide is mounted on the alignment guide, the first receptacle and the first post define a clearance gap between the tibia and the device for a patellar tendon.
1. A device for an orthopedic knee procedure comprising;
a tibial drill guide having a body portion and first and second posts fixed to the body portion, the first and the second posts extending away from a same side of the body portion, the first and the second posts defining first and second internal through bores, the first post having a longitudinal length from the body portion that is shorter than a longitudinal length of the second post from the body portion; and
a patient-specific tibial alignment guide, the alignment guide including:
a body with an inner anatomy-engaging surface constructed as a mirror to a corresponding tibial joint surface so as to conform and mate with the corresponding tibial joint surface; and
first and second guiding receptacles defining first and second inner channels sized and shaped to receive the first and the second posts of the tibial drill guide, the first and the second guiding receptacles extending from an external surface of the body opposite to the inner anatomy-engaging surface and away from the body of the alignment guide to respective free ends, and the first receptacle being shorter in length than the second receptacle when measured from the external surface of the body to the respective free ends away from the body of the alignment guide, such that when the alignment guide is mounted on the tibial joint surface and the drill guide is mounted on the alignment guide, the first receptacle and the first post define a clearance gap between the tibia and the device for a patellar tendon.
2. The device of claim 1 , wherein the alignment guide further comprises an arcuate arm extending from the body of the alignment guide.
3. The device of claim 1 , wherein the first post is configured to be positioned on a medial side of the tibia and the second post is configured to be positioned on a lateral side of the first post.
4. The device of claim 1 , wherein the first and second post have cross-sections of equal size.
5. The device of claim 1 , wherein the first and second internal through bores have circular cross-sections.
6. A device for an orthopedic knee procedure comprising:
a tibial drill guide having a body portion and first and second posts fixed to the body portion, the first and the second posts extending away from a same side of the body portion, the first and the second posts defining first and second internal through bores, the first post having a longitudinal length from the body portion that is shorter than a longitudinal length of the second post from the body portion, wherein the first post is configured to be positioned on a medial side of the tibia and the second post is configured to be positioned on a lateral side of the first post; and
a patient-specific tibial alignment guide, the alignment guide including:
a body with an inner anatomy-engaging surface constructed as a mirror surface of a corresponding tibial joint surface from medical scans of the knee of a patient; and
first and second guiding receptacles defining first and second inner channels sized and shaped to receive the first and the second posts of the tibial drill guide, the first and the second guiding receptacles extending from an external surface of the body opposite to the inner anatomy-engaging surface and away from the body of the alignment guide to respective free ends, and the first receptacle being shorter in length than the second receptacle when measured from the external surface of the body to the respective free ends away from the body of the alignment guide, such that when the alignment guide is mounted on the tibial joint surface and the drill guide is mounted on the alignment guide, the first receptacle and the first post define a clearance gap between the tibia and the device for a patellar tendon.
7. The device of claim 6 , wherein the first and second post have cross-sections of equal size.
8. The device of claim 6 , wherein the first and second internal through bores have circular cross-sections.
9. The device of claim 6 , wherein each of the first and second posts is cylindrical with circular cross-section.
10. The device of claim 6 , wherein the alignment guide further comprises an arcuate arm extending from the body of the alignment guide.
11. The device of claim 6 , wherein the tibial drill guide includes a handle portion extending from the body portion.
12. The device of claim 1 , wherein each of the first and second posts is cylindrical with circular cross-section.