High tibial osteotomy system

• US 20080015603A1
• Filed: 06/30/2006
• Published: 01/17/2008
• Est. Priority Date: 06/30/2006
• Status: Active Grant

• Current Assignee: Howmedica Osteonics Corp. (Stryker Corporation)
• Original Assignee: Howmedica Osteonics Corp. (Stryker Corporation)
• Inventors: Collazo, Carlos E.
• Granted Patent: US 8,241,292 B2
• Time in Patent Office: Days
• US Class Current: 606/87
• CPC Class Codes: A61B 17/152 for removing a wedge-shaped piece of bone
• CPC Class Codes: A61B 17/157 Cutting tibia
• CPC Class Codes: A61B 17/1604 Chisels; Rongeurs; Punches; Stamps
• CPC Class Codes: A61B 17/1675 for the knee
• CPC Class Codes: A61B 17/8095 Wedge osteotomy devices
• CPC Class Codes: A61B 2017/565 for surgical correction of axial deviation, e.g. hallux valgus or genu valgus
• CPC Class Codes: A61F 2002/2892 Tibia
• CPC Class Codes: A61F 2002/30736 Augments or augmentation pieces, e.g. wedges or blocks for bridging a bone defect
• CPC Class Codes: A61F 2002/30892 parallel

Abstract

A cutting block for use in a bone osteotomy procedure is disclosed, and includes a first cutting guide surface, a second cutting guide surface, and a third cutting guide surface. The first, second, and third cutting guide surfaces are adapted to be temporarily affixed to a bone having a first side and a second side such that the first cutting guide surface is disposed on the first side of the bone, and such that the second cutting guide surface and third cutting guide surface are disposed on the second side of the bone forming an angle therebetween.

Claims

1. A system for performing a bone osteotomy procedure, comprising:

a first cutting block having a first cutting guide surface formed therein and being adapted to be affixed to the bone in a first position such that the cutting guide surface is disposed substantially on a first side of the bone and a second position such that the first cutting guide surface is disposed substantially on a second side of the bone and is located distally of the first position; and

a second cutting block having a second cutting guide surface formed therein and being adapted for affixation to the bone such that the second cutting guide surface is positioned relative to the first position of the first cutting guide surface such that it forms an intersecting angle therewith.

2. The system of claim 1, wherein the bone is the tibia and the first and second cutting blocks are adapted to be affixed to an anterior surface of a proximal portion of the tibia.

3. The system of claim 2, wherein the first cutting guide surface of the first cutting block includes a portion thereof which extends in an anterior-posterior direction along a side cortex of the tibial head.

4. The system of claim 2, wherein the first cutting guide surface of the first cutting block includes a first surface portion and a second surface portion, wherein the first and second portions form planes which are spaced apart in an anterior-posterior direction so as to be substantially parallel relationship therebetween, and wherein the first and second surface portions face one another.

5. The system of claim 2, wherein the first cutting block is adapted to be affixed to the anterior portion of the proximal tibia by including a first hole and a second hole therein, the first and second holes being adapted to slideably engage a respective first pin and second pin, each of the pins having been inserted into the anterior portion of the proximal tibia.

6. The system of claim 5, wherein the first pin is disposed on the first side of the proximal tibia and the second pin is disposed on the second side of the proximal tibia.

7. The system of claim 6, wherein the first cutting block further includes a guide portion and an arm extending in a generally medial-lateral direction from the guide portion, the second hole being formed in the arm.

8. The system of claim 7, wherein the first cutting block further includes a sliding member slideably engaged with the arm and having the first hole formed therein.

9. The system of claim 8, wherein the first cutting guide surface of the first cutting block defines a first plane, and wherein the second hole has an axis that lies substantially on the first plane.

10. The system of claim 9, wherein the first hole is spaced apart from the first plane in a proximal-distal direction.

11. The system of claim 7, wherein the guide portion contacts the anterior portion of the proximal tibia at a point thereof.

12. The system of claim 11, wherein the arm is spaced-apart from the anterior portion of the proximal tibia so as to be positioned anteriorily of a patellar tendon associated with the proximal tibia.

13. The system of claim 2, wherein the second cutting guide on the second cutting block includes a first surface portion and a second surface portion, wherein the first and second portions form planes which are spaced apart in an anterior-posterior direction so as to be substantially parallel in relationship therebetween, and wherein the first and second surface portions face one another.

14. The system of claim 2, wherein the second cutting block is affixable to the anterior portion of the proximal tibia by a third hole formed in the second cutting block, the third hole being adapted for slideably engaging a pin inserted into the anterior portion of the proximal tibia on the second side of the proximal tibia.

15. The system of claim 14, wherein the second cutting block includes a flange extending therefrom in a generally posterior direction and defining a first plane, and wherein the second cutting guide surface of the second cutting block defines a second plane disposed at an intersecting angle with respect to the first plane.

16. The system of claim 15, wherein the intersecting angle forms an apex, the apex being disposed on the first side of the proximal tibia and the second cutting guide surface of the second cutting block being positioned substantially on the first side of the proximal tibia.

17. The system of claim 16, wherein the flange is adapted for insertion into a first cut formed using the first cutting guide surface of the first cutting block such that the plane of the second cutting guide of the second cutting block forms an intersecting angle with a plane defined by the first cut.

18. A system for performing a high-tibial osteotomy procedure, comprising:

a first cutting block having a first cutting guide surface formed therein and being adapted to be affixed to an anterior surface of a proximal portion of the tibia in a first position such that the cutting guide surface is disposed substantially on a first side of the tibia and a second position such that the first cutting guide surface is disposed substantially on a second side of the tibia and is located distally of the first position; and

a second cutting block having a second cutting guide surface formed therein and being adapted for affixation to the anterior surface of the proximal portion of the tibia such that the second cutting guide surface is positioned relative to the first position of the first cutting guide surface such that it forms an intersecting angle therewith.

19. The system of claim 18, wherein the first cutting block is adapted to be affixed to the anterior portion of the proximal tibia by including a first hole and a second hole therein, the first and second holes being adapted to slideably engage a respective first pin and second pin, the first pin being inserted into the first side of the anterior portion of the proximal tibia, and the second pin being inserted into the second side of the anterior surface of the proximal tibia.

20. The system of claim 18, wherein the second cutting block is affixable to the anterior portion of the proximal tibia by a third hole formed in the second cutting block, the third hole being adapted for slideably engaging a pin inserted into the anterior portion of the proximal tibia on the second side of the proximal tibia, and wherein the second cutting block includes a flange adapted for insertion into a first cut formed using the first cutting guide surface of the first cutting block such that a plane defined by the second cutting guide of the second cutting block forms an intersecting angle with a plane defined by the first cut.