I have heard of the use of a sonic scalpel for the removal of ruptured disk material. It vibrates the tissue away in such a way as to promote excellent healing without risk to surrounding tissues, nerves and blood vessels.

In some recent cases new artficial disk material has been implanted.

Sonic scalpels have often been used on tumors that are hard to reach or inoperable but their application to ruptured disks has sounded very promising.

Sorry thats all I know.