Apparatus and method for repairing bone defects

Patent metadata

Field	Value
Publication number	US-9289222-B2
Application number	US-201313757077-A
Country	US
Kind code	B2
Filing date	Feb 1, 2013
Priority date	Feb 1, 2013
Publication date	Mar 22, 2016
Grant date	Mar 22, 2016

Abstract

A system can include a sizing and drill guide having a body with a bone engaging side, an opposite side and first and second guide holes. The bone engaging side can include a profile for positioning in the trochlear groove and the guide holes can include axes that can be orientated at an acute angle. Retaining members can be positioned in bores formed in the body and can fix the guide to the femur. A cutting device can be guided by the guide holes and can include a bone engaging end having a body and first and second cutting portions. The first cutting portion can have a smaller diameter than the second cutting portion and can be axially spaced apart therefrom so as to form a stepped pocket in the femur. The body can include an outer diameter sized to be complimentary to an inner diameter of the guide holes.

First claim

What is claimed is:

1. A method for repairing a soft tissue or bone defect, comprising:
positioning a guide within a trochlear groove of a femur;
fixing the guide to the femur;
forming a superior stepped pocket portion in the femur by guiding a reaming device through a superior guide hole in the guide while the guide is fixed to the femur; and
forming an inferior stepped pocket portion in the femur by guiding the reaming device through an inferior guide hole in the guide while the guide is fixed to the femur, the superior and inferior stepped pocket portions forming a stepped trochlear groove pocket in the femur; and
positioning a femoral implant in the trochlear groove pocket.

2. The method of claim 1 , further comprising selecting the guide having a bone engaging profile sized and shaped to mate with the trochlear groove of the femur from a plurality of guides having different bone engaging profiles.

3. The method of claim 1 , wherein forming the superior stepped pocket portion and the inferior stepped pocket portion includes forming the superior and inferior stepped pocket portions such that the superior and inferior stepped pocket portions overlap each other.

4. The method of claim 3 , wherein forming the superior stepped pocket portion includes forming a first inner pocket portion of a first diameter and a first outer pocket portion of a second larger diameter that is axially spaced apart from the first inner pocket portion and, wherein forming the inferior stepped pocket portion includes forming a second inner pocket portion of the first diameter and a second outer pocket portion of the second larger diameter that is axially spaced apart from the second inner pocket portion.

5. The method of claim 1 , wherein forming the inferior and superior stepped pocket portions includes positioning a depth control device at a location on the reamer and advancing the reamer relative to the respective guide holes until the depth control device engages the guide.

6. The method of claim 1 , wherein positioning the femoral implant in the stepped trochlear groove pocket includes positioning the femoral implant in the stepped trochlear groove pocket such that an articular surface of the implant is substantially flush with surrounding native cartilage of the femur.

7. A method for repairing a soft tissue or bone defect, comprising:
selecting a combined sizing and drill guide having a bone engaging profile sized and shaped to mate with a trochlear groove of a patient, the combined sizing and drill guide selected from a plurality of sizing and drill guides having different bone engaging profiles;
positioning the selected guide within the trochlear groove of the femur in a single position;
forming a superior stepped pocket portion in the femur by guiding a reaming device through a superior guide hole in the combined sizing and drill guide, and forming an inferior stepped pocket portion in the femur by guiding the reaming device through an inferior guide hole of the guide, the superior and inferior stepped pocket portions forming a stepped trochlear groove pocket in the femur; and
positioning a femoral implant in the trochlear groove pocket, the femoral implant corresponding to the size and shape of the selected combined sizing and drill guide.

8. The method of claim 7 , wherein forming the superior stepped pocket portion and the inferior stepped pocket portion includes forming the superior and inferior stepped pocket portions such that the superior and inferior pocket stepped portions overlap each other.

9. The method of claim 8 , wherein forming the superior stepped pocket portion and the inferior stepped pocket portion includes forming the superior and inferior stepped pocket portions such that an inferior portion of the superior stepped pocket portion overlaps a superior portion of the inferior stepped pocket portion and the superior and inferior stepped pocket portions are each truncated.

10. The method of claim 8 , wherein forming the superior stepped pocket portion includes forming a first inner pocket portion of a first diameter and a first outer pocket portion of a second larger diameter that is axially spaced apart from the first inner pocket portion and, wherein forming the inferior stepped pocket portion includes forming a second inner pocket portion of the first diameter and a second outer pocket portion of the second larger diameter that is axially spaced apart from the second inner pocket portion.

11. The method of claim 10 , wherein forming the superior and inferior stepped pocket portions includes forming the superior and inferior stepped pocket portions such that the first and second inner pockets overlap each other so as to be connected to each other and the first and second outer pockets overlap each other so as to be connected to each other.

12. The method of claim 11 , wherein forming the superior and inferior stepped pocket portions includes forming the superior and inferior stepped pocket portions such that the first inner and outer pockets are formed parallel to a first plane and the second inner and outer pockets are formed parallel to a second plane, the first plane being angled at an acute angle relative to the second plane.

13. The method of claim 12 , wherein positioning the femoral implant in the stepped trochlear groove pocket includes positioning a first outer perimeter of the implant in the first and second outer pocket portions and positioning a projection of the implant extending from a bone engaging side of the implant and having a second outer perimeter in the first and second inner pocket portions.

14. The method of claim 12 , wherein a width of the first outer perimeter of the implant corresponds to a diameter of the first and second outer pocket portions and a width of the second outer perimeter of the implant corresponds to a diameter of the first and second inner pocket portions.

15. The method of claim 14 , wherein positioning the femoral implant in the stepped trochlear groove pocket includes positioning the femoral implant in the stepped trochlear groove pocket such that an articular surface of the implant is substantially flush with surrounding native cartilage of the femur.

16. The method of claim 7 , wherein forming the superior and inferior stepped pocket portions includes forming the superior and inferior stepped pocket portions while maintaining the combined sizing and drill guide fixed to the femur in the same position.

17. The method of claim 16 , wherein forming the inferior and superior stepped pocket portions includes positioning a depth control device at a location on a reamer to correspond to the selected combined sizing and drill guide and positioning the reamer in the superior and inferior guide holes and advancing the reamer relative to the respective guide holes until the depth control device engages the combined sizing and drill guide.

18. The method of claim 7 , further comprising fixing the combined sizing and drill guide relative to the trochlear groove by inserting at least one retaining member through a guide bore formed in the combined sizing and drill guide.

19. The method of claim 7 , further comprising attaching a depth gauge to the combined sizing and drill guide to determine a depth measurement for reaming.

20. A method for repairing a soft tissue or bone defect, comprising:
selecting a combined sizing and drill guide having a bone engaging profile sized and shaped to mate with a trochlear groove of a patient, the combined sizing and drill guide selected from a plural

Assignees

• Biomet Sports Medicine Llc

Inventors

• Maxson William

Classifications

• A61B17/1675 Primary

  for the knee · CPC title

• A61B17/1697

  specially adapted for wire insertion · CPC title

• A61B17/1764 Primary

  for the knee · CPC title

• A61B2017/1602

  Mills · CPC title

• A61F2/3877

  Patellae or trochleae · CPC title