Transosseous attachment

1. A method of placing a suture transosseously through a bone, the method comprising:

forming a first bone tunnel in the bone;

positioning a portion of a suture in the first bone tunnel;

indexing a guide to the first bone tunnel while the suture is in the first bone tunnel;

guiding a tunnel forming instrument with the guide to form a second bone tunnel transverse to and intersecting the first bone tunnel while the guide is indexed to the first bone tunnel; and

withdrawing the portion of the suture from the first bone tunnel through the second bone tunnel, wherein the first bone tunnel is formed by impacting a tunnel forming instrument into the bone and wherein the portion of suture is positioned in the first bone tunnel simultaneously with impacting a tunnel forming instrument into the bone to form the first bone tunnel.

2. The method of claim 1 wherein the first bone tunnel is formed into the bone by impacting a bone tunnel punch and the portion of suture is carried by the bone tunnel punch to simultaneously embed the portion of suture in the first bone tunnel as it is formed, the method further comprising at least partially withdrawing the bone tunnel punch prior to forming the second bone tunnel leaving a loop of suture embedded in the first bone tunnel.

3. A method of placing a suture transosseously through a bone, the method comprising:

forming a first bone tunnel in the bone;

positioning a portion of a suture in the first bone tunnel;

indexing a guide to the first bone tunnel while the suture is in the first bone tunnel;

guiding a tunnel forming instrument with the guide to form a second bone tunnel transverse to and intersecting the first bone tunnel while the guide is indexed to the first bone tunnel; and

withdrawing the portion of the suture from the first bone tunnel through the second bone tunnel, wherein the step of indexing a guide to the first bone tunnel comprises engaging a portion of the guide with a member inserted in the first bone tunnel, the member being separately inserted into the first bone tunnel prior to engaging the portion of the guide with the member and the member remaining in the first bone tunnel and engaged with the guide while the second bone tunnel is formed.

4. The method of claim 3 wherein the member inserted in the first bone tunnel comprises a first bone tunnel forming instrument used to form the first bone tunnel.

5. The method of claim 4 wherein engaging a portion of the guide with a member inserted in the first bone tunnel comprises coaxially engaging a passage in the guide with the first bone tunnel forming instrument.

6. The method of claim 4 wherein engaging a portion of the guide with a member inserted in the first bone tunnel comprises laterally engaging a slot in the guide with the first bone tunnel forming instrument.

7. A method of placing a suture transosseously through a bone, the method comprising:

forming a first bone tunnel in the bone;

positioning a portion of a suture in the first bone tunnel;

indexing a guide to the first bone tunnel while the suture is in the first bone tunnel;

guiding a tunnel forming instrument with the guide to form a second bone tunnel transverse to and intersecting the first bone tunnel while the guide is indexed to the first bone tunnel; and

withdrawing the portion of the suture from the first bone tunnel through the second bone tunnel, wherein the guide includes an indexing probe, the indexing probe being inserted into the first bone tunnel to index the guide to the first bone tunnel, the portion of the suture being delivered to the first bone tunnel from the indexing probe and wherein the indexing probe is hollow and the guide further comprises a suture passer with an end moveable within the indexing probe between a first retracted position and a second extended position in which the suture passer moves the suture into engagement with a suture retriever positioned in the second bone tunnel.

8. The method of claim 7 wherein the suture retriever comprises a retriever shaft having a distal end and a transverse aperture adjacent the distal end, the retriever shaft being mounted coaxially within a retriever sleeve for relative axial translation between a first position in which the transverse aperture is relatively open and able to receive the suture portion and a second position in which the retriever sleeve at least partially covers the transverse aperture to grip the suture, the suture passer passing the portion of suture through the transverse aperture of the suture retriever.

9. A method of placing a suture transosseously through a bone, the method comprising:

forming a first bone tunnel in the bone;

positioning a portion of a suture in the first bone tunnel;

indexing a guide to the first bone tunnel while the suture is in the first bone tunnel;

guiding a tunnel forming instrument with the guide to form a second bone tunnel transverse to and intersecting the first bone tunnel while the guide is indexed to the first bone tunnel;

withdrawing the portion of the suture from the first bone tunnel through the second bone tunnel;

reinforcing at least one of the first and second bone tunnels by simultaneously inserting a reinforcing member into the one of the first and second bone tunnels as the one of the first and second bone tunnels is formed to create a reinforced bone tunnel, the reinforcing member remaining in the reinforced bone tunnel after a tunnel forming instrument is removed from the reinforced bone tunnel and after the suture is withdrawn through the second bone tunnel; and

leaving the suture and reinforcing member in the reinforced bone tunnel as implants after completing a surgical procedure.

10. The method of claim 9 wherein the reinforcing member comprises a sleeve and the tunnel forming instrument comprises a punch coaxially receiving the sleeve so that the sleeve is punched into the bone with the punch as the reinforced tunnel is formed and remains in the bone upon withdrawal of the punch.

11. A method of placing a suture transosseously through a bone, the method comprising:

forming a first bone tunnel in the bone;

inserting a member extending from a guide into the first bone tunnel to index the guide to the first bone tunnel;

while the member is inserted into the first bone tunnel, guiding a tunnel forming instrument with the guide to form a second bone tunnel transverse to and intersecting the first bone tunnel;

after forming the second bone tunnel and while the member is inserted into the first bone tunnel and without removing the tunnel forming instrument from the second bone tunnel, advancing a portion of a suture in the first bone tunnel so that it engages the tunnel forming instrument; and

withdrawing the portion of the suture through the second bone tunnel with the tunnel forming instrument.

12. The method of claim 11 wherein the guide includes an indexing probe, the step of indexing the guide comprising inserting the indexing probe into the first bone tunnel and the step of advancing a portion of a suture comprising advancing the portion of suture from the indexing probe.

13. The method of claim 12 wherein the indexing probe is hollow and the guide further comprises a suture passer with an end moveable within the indexing probe between a first retracted position and a second extended position the method further comprising moving the suture passer from the first retracted position to the second extended position to advance the portion of a suture in the first bone tunnel and engage the suture with the tunnel forming instrument while the tunnel forming instrument is positioned in the second bone tunnel.

14. The method of claim 13 wherein the tunnel forming instrument comprises a retriever shaft having a distal end and a transverse aperture adjacent the distal end, the retriever shaft being mounted coaxially within a retriever sleeve for relative axial translation, the method further comprising translating the retriever shaft relative to the retriever sleeve to trap the portion of suture in the transverse aperture of the tunnel forming instrument.

15. The method of claim 11 wherein the step of guiding a tunnel forming instrument comprises punching the tunnel forming instrument through the bone to form the second bone tunnel.