Disc therapy

Apparatus for treating a herniated intervertebral disc of a subject, the apparatus comprising:

• at least one intra-pulposus exposed electrode surface, which is configured to be implanted in a nucleus pulposus of the herniated intervertebral disc;
• one or more extra-pulposus exposed electrode surfaces, which are configured to be implanted outside the nucleus pulposus, in electrical communication with the herniated intervertebral disc;
• an electrode mount, which is configured to be implanted crossing an annulus fibrosus of the herniated intervertebral disc, and which is configured to hold the at least one intra-pulposus exposed electrode surface in place in the nucleus pulposus;
• and
• control circuitry, which is (a) electrically coupled to the at least one intra-pulposus exposed electrode surface and the one or more extra-pulposus exposed electrode surfaces, and (b) configured to treat disc herniation by creating an electric potential difference between the at least one intra-pulposus exposed electrode surface and the one or more extra-pulposus exposed electrode surfaces.