Subchondral treatment of osteoarthritis in joints

Patent metadata

Field	Value
Publication number	US-9486320-B2
Application number	US-201514739203-A
Country	US
Kind code	B2
Filing date	Jun 15, 2015
Priority date	Jun 10, 2011
Publication date	Nov 8, 2016
Grant date	Nov 8, 2016

Abstract

Devices, instruments and associated methods for the subchondral treatment of osteoarthritis in hip and shoulder joints are provided. In addition, a method for treating joint pain is provided. The method comprises: identifying a subchondral defect in a subchondral region of a bone of the joint; selecting a subchondral access path to a location near the subchondral defect; and treating the subchondral defect, via the subchondral access, in a manner that restores normal force distribution and joint function while preserving the articular surface of the bone, wherein the joint is a hip or shoulder.

First claim

What is claimed is:

1. A method for a partial or total joint replacement in a patient, comprising:
resecting at least part of an end of a first bone adjacent a joint, wherein the end of the first bone has an articular surface that forms part of the joint, and wherein said resecting removes at least part of the articular surface and provides access to a first end of a sleeve that was implanted and left behind in the first bone in a prior surgical procedure that preserved the articular surface of the end of the first bone, said sleeve being fixed to surrounding bone via bone ingrowth into the sleeve; and
positioning part of a joint prosthesis in the first end of the sleeve for anchoring the joint prosthesis in the first bone.

2. The method of claim 1 , wherein the joint is a shoulder joint or a hip joint, and the first bone is a humerus or a femur, respectively.

3. The method of claim 1 , wherein the first end of the sleeve is located in a neck of the femur or a neck of the humerus.

4. The method of claim 1 further comprising delivering a bone void filler through the sleeve prior to said resecting.

5. A method for a partial or total joint replacement in a patient, comprising:
re-accessing a sleeve in an end of a first bone adjacent a joint, the sleeve having been implanted and left behind in the first bone in a prior surgical procedure, wherein the re-accessed sleeve is fixed to surrounding bone via bone ingrowth into the sleeve;
resecting at least part of the end of the first bone, wherein said resecting exposes a first end of the fixed sleeve and includes operation of a cutting instrument and/or cutting guide attached to the fixed sleeve; and
positioning part of a joint prosthesis in the first end of the fixed sleeve for anchoring the joint prosthesis in the first bone.

6. The method of claim 5 , wherein said re-accessing includes re-accessing a second end of the sleeve.

7. The method of claim 6 further comprising removing a cap from the second end of the sleeve.

8. The method of claim 5 , wherein the end of the first bone has an articular surface that forms part of the joint, and wherein said prior surgical procedure preserved the articular surface of the end of the first bone.

9. The method of claim 5 , wherein the first end of sleeve is shaped for making a Morse taper connection.

10. The method of claim 5 , wherein said prior surgical procedure included delivering a bone void filler through the sleeve.

11. A method for a partial or total joint replacement in a patient, comprising:
re-accessing a sleeve in an end of a first bone adjacent a joint, the sleeve having been implanted and left behind in the first bone in a prior surgical procedure, wherein said sleeve is fixed to surrounding bone via bone ingrowth into the sleeve, and wherein said re-accessing includes removing at least part of the end of the first bone and exposing a first end of the sleeve; and
positioning part of a joint prosthesis in the first end of the re-accessed sleeve for anchoring the joint prosthesis in the first bone.

12. The method of claim 11 further comprising removing a cap from a second end of the re-accessed sleeve.

13. The method of claim 11 further comprising removing a cannulated bone screw from the sleeve prior to said positioning.

14. The method of claim 11 , wherein the joint is a shoulder, hip, knee or ankle joint.

15. The method of claim 11 , wherein said positioning includes positioning a stem component of the joint prosthesis in the first end of the re-accessed sleeve.

16. The method of claim 11 , wherein the end of the first bone has an articular surface that forms part of the joint, and wherein said prior surgical procedure preserved the articular surface of the end of the first bone.

17. The method of claim 16 , wherein said prior surgical procedure was used to treated a bone marrow lesion or a bone marrow edema in the first bone.

18. The method of claim 11 , wherein said resecting includes operation of a cutting instrument and/or cutting guide attached to the re-accessed sleeve.

19. The method of claim 11 , wherein the sleeve is porous coated.

20. The method of claim 11 , wherein the sleeve is porous.

21. The method of claim 11 , wherein the joint prosthesis and the sleeve are connected via a Morse taper connection.

Assignees

• Zimmer Knee Creations Inc

Inventors

• Sharkey Peter F

Classifications

• A61F2/32

  for the hip · CPC title

• A61F2/4059

  Humeral shafts · CPC title

• A61F2/3601 Primary

  for replacing only the epiphyseal or metaphyseal parts of the femur, e.g. endoprosthetic femoral heads or necks directly fixed to the natural femur by internal fixation devices (non-prosthetic internal fixation devices for the femoral head or neck A61B17/74) · CPC title

• A61B17/1668

  for the upper femur (A61B17/164 takes precedence) · CPC title

• A61F2/4003

  Replacing only the epiphyseal or metaphyseal parts of the humerus, i.e. endoprosthesis not comprising an entire humeral shaft (replacing only the epiphyseal or metaphyseal parts of the femur A61F2/3601) · CPC title