High tibial osteotomy guide

• US 20080015605A1
• Filed: 07/03/2006
• 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 8,545,508 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 cutting block for use in a bone osteotomy procedure, comprising:

a. a first cutting guide surface open to a first side of said cutting block;

b. a second cutting guide surface open to a second side of said cutting block; and

c. a third cutting guide surface open to the second side of the cutting block;

wherein the cutting block is adapted to be temporarily affixed to a bone having a first side and a second side such that said first cutting guide surface is disposed on the first side of the bone defining a first plane with respect to the bone, the second cutting guide surface is disposed on the second side of the bone defining a second plane with respect to the bone, and the third cutting guide surface is disposed on the second side of the bone defining a third plane with respect to the bone, the second and third planes intersecting within the bone to form an apex extending generally parallel to the first and second sides and forming an angle therebetween.

2. The cutting block of claim 1, wherein said bone is a tibia, said cutting block being adapted to be affixed to an anterior portion of a proximal portion of said tibia.

3. The cutting block of claim 2, further including a fourth guide surface for guiding an instrument for forming a circular bore along said apex.

4. The cutting block of claim 2 further comprising:

a. a body having a receiving portion and said first cutting guide surface formed therein;

b. a first interchangeable portion having said second cutting guide surface formed therein; and

c. a second interchangeable portion having said third cutting guide surface formed therein;

wherein said first and second interchangeable portions are adapted to be selectively inserted within said receiving portion of said main body.

5. The cutting block of claim 4, wherein said second cutting guide surface is positioned in said first interchangeable portion such that when said first interchangeable portion is inserted within said receiving portion, said second cutting guide surface is parallel to said first cutting guide surface.

6. The cutting block of claim 5, wherein second cutting guide surface is positioned in said first interchangeable portion such that when said first interchangeable portion is inserted within said receiving portion said second cutting guide surface is proximal to said first cutting guide surface.

7. The cutting block of claim 4, wherein said third cutting guide surface is positioned within said second interchangeable portion such that when said second interchangeable portion is inserted within said receiving portion, said third cutting guide surface forms an obtuse angle relative to said first cutting guide surface.

8. The cutting block of claim 4, further comprising a fixation hole formed in said body, wherein said fixation hole is adapted to receive a fixation pin such that said fixation pin is capable of affixing said cutting block to said proximal tibia.

9. The cutting block of claim 4, wherein said body further includes an alignment hole adapted to receive an alignment rod.

10. The cutting block of claim 4 further comprising a cutout portion, wherein said cutout portion allows said cutting block to straddle a patella tendon of said proximal tibia.

11. The cutting block of claim 4, wherein said first cutting guide surface is used to form a first cut in said proximal tibia, said second cutting guide surface is used to form second cut in said proximal tibia, and said third cutting guide surface is used to form a third cut in said proximal tibia, each of said first, second, and third cuts having a terminal end.

12. The cutting block of claim 14, wherein said second and third cuts form a wedge-shaped section such that said wedge-shaped section is removable from said proximal tibia.

13. The cutting block of claim 15, wherein said first cut is capable of being opened so as to receive said wedge-shaped section.

14. The cutting block of claim 11, wherein said body further includes a first drill hole and a second drill hole, and wherein each of said first and second drill holes are adapted to be used with a drill in order to form a first guide hole and a second guide hole in said proximal tibia.

15. The cutting block of claim 14, wherein said second interchangeable portion further includes a third drill hole adapted to be used with a drill in order to form a third guide hole in said proximal tibia.

16. The cutting block of claim 15, wherein said first, second, and third guide holes extend from an anterior cortex of said proximal tibia to a posterior cortex of said proximal tibia.

17. The cutting block of claim 16, wherein said first, second, and third guide holes are positioned within said cutting block such that said first guide hole is positioned at said terminal end of said first cut, said second guide hole is positioned at said terminal end of said second cut, and said third guide hole is positioned at said terminal end of said third cut.

18. The cutting block of claim 17, wherein said first, second, and third guide holes are adapted to slideably engage a guide arm affixed to an osteotome.

19. The cutting block of claim 18, wherein said osteotome is L-shaped such that an open side is formed therein, and wherein said guide arm is affixed to said open side of said osteotome.

20. The cutting block of claim 19, wherein said open side of said osteotome is dimensioned so as to allow said first and second cuts to extend past said patella tendon in a medial-lateral direction.

21. The cutting block of claim 17, wherein said terminal ends of said first and second cuts form an overlap therebetween.

22. The cutting block of claim 2, wherein said first and second cutting guide surfaces are disposed on a first arm.

23. The cutting block of claim 22, wherein said third cutting guide surface is disposed on a second arm, said second arm being rotatably affixed to said first arm.

24. The cutting block of claim 23, wherein said first cutting guide surface and said second cutting guide surface are disposed on said first arm in a parallel relationship to each other.

25. The cutting block of claim 24, wherein said first cutting guide surface is proximal to said second cutting guide surface.

26. The cutting block of claim 25 further comprising a cutout allowing said cutting block to straddle a patella tendon of said proximal tibia.

27. The cutting block of claim 26, wherein said first cutting guide surface is used to form a first cut in said proximal tibia, said second cutting guide surface is used to form second cut in said proximal tibia, and third cutting guide surface is used to form a third cut in said proximal tibia, each of said first, second, and third cuts having a terminal end.

28. The cutting block of claim 27, wherein said terminal ends of said first and second cuts form an overlap therebetween.

29. The cutting block of claim 27, wherein said first cutting guide surface, said second cutting guide surface and said third cutting guide surface are adapted for use with an osteotome.

30. The cutting block of claim 29, wherein said osteotome is L-shaped.

31. The cutting block of claim 30 further comprising:

a. a first slot formed in said first cutting guide surface;

b. a second slot formed in said second cutting guide surface; and

c. a third slot formed in said third cutting guide surface.

wherein said first, second, and third slots are adapted to mate with a guide arm formed on said osteotome.

32. The cutting block of claim 27 further comprising a first hole formed in said first arm adapted to accept a first pin temporarily affixed to said proximal tibia.

33. The cutting block of claim 32 further comprising a second hole formed in said second arm adapted to accept a second pin that is temporarily affixed to said proximal tibia.

34. A cutting block for use in a high-tibial osteotomy procedure, comprising:

a. a body having a first cutting guide surface and a receiving portion formed therein;

b. a first interchangeable portion having a second cutting guide surface formed therein; and

c. a second interchangeable portion having a third cutting guide surface formed therein;

wherein said cutting block is adapted to be temporarily affixed to an anterior portion of a proximal tibia having a first side and a second side;

wherein said first and second interchangeable portions are adapted to be selectively inserted within said receiving portion of said body;

wherein said first cutting guide surface is disposed on the first side of said proximal tibia;

wherein said second cutting guide surface is positioned within said first interchangeable portion such that when said first interchangeable portion is inserted within said receiving portion, said second cutting guide surface is disposed on said second side of said proximal tibia and is parallel to said first cutting guide surface; and

wherein said third cutting guide surface is positioned within said second interchangeable portion such that when said second interchangeable portion is inserted within said receiving portion, said third cutting guide surface is disposed on said second side of said proximal tibia and forms an obtuse angle relative to said first cutting guide surface.

35. A cutting block for use in a high-tibial osteotomy procedure, comprising:

a. a first arm having a first cutting guide surface and a second cutting guide surface disposed therein;

b. a second arm having a third cutting guide surface disposed thereon;

wherein said cutting block is adapted to be temporarily affixed to an anterior portion of a proximal tibia having a first side and a second side;

wherein said first cutting guide surface is disposed on said first side of said proximal tibia;

wherein said second cutting guide surface is disposed on said second side of said proximal tibia;

wherein said second arm is rotatably affixed to said first arm such that said third cutting guide surface is disposed on said second side of said proximal tibia; and

wherein said first cutting guide surface and said second cutting guide surface are substantially parallel to each other.