Methods of repairing cartilage defects

Patent metadata

Field	Value
Publication number	US-10524775-B2
Application number	US-201514790570-A
Country	US
Kind code	B2
Filing date	Jul 2, 2015
Priority date	Jul 2, 2015
Publication date	Jan 7, 2020
Grant date	Jan 7, 2020

Abstract

A method for repairing a cartilage defect according to an exemplary aspect of the present disclosure includes, among other things, preparing a cartilage defect for implantation of a cartilage graft and attaching the cartilage graft via a transosseus tunnel.

First claim

What is claimed is:

1. A method for repairing a cartilage defect, comprising:
a) performing a bone marrow stimulation at the cartilage defect, wherein the bone marrow stimulation comprises a microfracture procedure;
b) drilling at least one transosseus tunnel, wherein the at least one transosseus tunnel extends continuously from a first opening at a first location of a bone to a second opening at a second location of the bone;
c) passing a flexible strand through at least two different openings of a cartilage graft, wherein the cartilage graft includes a micronized cartilage matrix;
d) tensioning the flexible strand that is passed through the cartilage graft through the at least one transosseus tunnel;
e) knotlessly fixating the cartilage graft to the bone; and
f) applying a layer of fibrin over the cartilage graft after knotlessly fixating the cartilage graft to the bone.

2. The method as recited in claim 1 , wherein the bone has vertical margins around a periphery of the cartilage defect.

3. The method as recited in claim 2 , wherein the bone comprises at least a portion of the cartilage defect removed.

4. The method as recited in claim 1 , further comprising drying the cartilage defect.

5. The method as recited in claim 1 , wherein the at least one transosseus tunnel exits in the cartilage defect.

6. The method as recited in claim 1 , wherein the at least one transosseus tunnel is three transosseus tunnels.

7. The method as recited in claim 1 , comprising shuttling a free end of the flexible strand through the flexible strand to create a spliced loop around the cartilage graft.

8. The method as recited in claim 1 , wherein knotlessly fixating the cartilage graft to bone is via a fixation device.

9. The method as recited in claim 8 , wherein the fixation device is a screw, an anchor, a button, or a suture construct.

10. The method as recited in claim 8 , wherein the fixation device is more than one fixation device.

11. The method as recited in claim 10 , wherein the more than one fixation device is selected from the group consisting of a screw, an anchor, a button, a suture construct, and combinations thereof.

12. The method as recited in claim 1 , wherein knotlessly fixating the cartilage graft to the bone includes:
inserting a fixation device into the at least one transosseous tunnel at an opposite end of the at least one transosseous tunnel from the cartilage graft.

13. The method as recited in claim 1 , comprising:
drilling a second transosseus tunnel; and
tensioning a second flexible strand that is passed through the cartilage graft and through the second transosseus tunnel,
wherein the cartilage graft is fixated to the bone by the flexible strand and the second flexible strand.

14. The method as recited in claim 13 , comprising:
drilling a third transosseus tunnel; and
tensioning a third flexible strand that is passed through the cartilage graft and through the third transosseus tunnel,
wherein the cartilage graft is fixated to the bone by the flexible strand, the second flexible strand, and the third flexible strand.

15. The method as recited in claim 14 , comprising:
drilling a fourth transosseus tunnel; and
tensioning a fourth flexible strand that is passed through the cartilage graft and through the fourth transosseus tunnel,
wherein the cartilage graft is fixated to the bone by the flexible strand, the second flexible strand, the third flexible strand, and the fourth flexible strand,
wherein the flexible strand is positioned in a first quadrant of the cartilage graft, the second flexible strand is positioned in a second quadrant of the cartilage graft, the third flexible strand is positioned in a third quadrant of the cartilage graft, and the fourth flexible strand is positioned in a fourth quadrant of the cartilage graft,
wherein the first quadrant, the second quadrant, the third quadrant, and the fourth quadrant are different quadrants of the cartilage graft.

16. The method as recited in claim 1 , wherein the cartilage graft includes a cartilage disk having a plurality of pores.

17. The method as recited in claim 1 , wherein the cartilage defect includes an osteochondral defect or a chondral defect.

18. The method as recited in claim 1 , comprising:
after applying the fibrin, allowing the cartilage graft to sit for a predefined amount of time;
ranging a joint associated with the bone after the predefined amount of time; and
closing the joint.

19. The method as recited in claim 1 , comprising:
prior to passing the flexible strand through the at least two different openings of the cartilage graft, placing a template over the cartilage defect;
marking the template to indicate a size and a shape of the cartilage defect; and
trimming the cartilage graft down to the size and the shape indicated by the template.

20. A method for repairing a cartilage defect, comprising:
drilling a first transosseus tunnel through a bone, wherein the first transosseus tunnel extends continuously from a first opening at a first location of the bone to a second opening at a second location of the bone;
drilling a second transosseus tunnel through the bone, wherein the second transosseus tunnel extends continuously from a third opening at a third location of the bone to a fourth opening at a fourth location of the bone;
drilling a third transosseus tunnel through the bone, wherein the third transosseus tunnel extends continuously from a fifth opening at a fifth location of the bone to a sixth opening at a sixth location of the bone;
passing a first flexible strand through a first pore and a second pore of a cartilage disk of a cartilage graft to form a first mattress stitch;
passing a second flexible strand through a third pore and a fourth pore of the cartilage disk to form a second mattress stitch;
passing a third flexible strand through a fifth pore and a sixth pore of the cartilage disk to form a third mattress stitch,
wherein the first mattress stitch is positioned in a first one-third section of the cartilage disk, the second mattress stitch is poisoned in a second one-third section of the cartilage disk, and the third mattress stitch is positioned in a third one-third section of the cartilage disk;
passing the first flexible strand through the first transosseus tunnel;
passing the second flexible strand through the second transosseus tunnel;
passing the third flexible strand through the third transosseus tunnel;
tensioning the first flexible strand, the second flexible strand, and the third flexible strand to approximate the cartilage disk to the bone, wherein, once approximated, the cartilage disk is adjacent to the first opening, the third opening, and the fifth opening;
inserting a first knotless suture anchor into the second opening of the first transosseus tunnel at an opposite end of the first transosseus tunnel from the cartilage disk, thereby knotlessly fixating the first flexible strand relative to the bone;
inserting a second knotless suture anchor into the fourth opening of the second transosseus tunnel at an opposite end of the second transosseus tunnel from the cartilage disk, thereby knotlessly fixating the second flexible strand relative to the bone; and
inserting a third knotless suture anchor into the sixth opening of the third transosseus tunnel at an opposite end of the third transosseus tunnel from the cartilage disk, thereby knotlessly fixating the third flexible strand relative to the bone,
wherein the cartilage graft includes a micronized cartil

Assignees

• Arthrex Inc

Inventors

• Benedict Robert
• Stoll Marc
• Cook James L

Classifications

• A61F2002/30751

  for attaching cartilage scaffolds to underlying bone · CPC title

• A61B2017/0456

  Surface features on the anchor, e.g. ribs increasing friction between the suture and the anchor · CPC title

• A61B2017/0427

  having anchoring barbs or pins extending outwardly from the anchor body · CPC title

• A61B2017/0445

  cannulated, e.g. with a longitudinal through-hole for passage of an instrument · CPC title

• A61B2017/0414

  having a suture-receiving opening, e.g. lateral opening · CPC title