of FIG. 6. [0041] FIGS. 8A-8C are cross-sectional top views of a spinal disc, showing a method for introducing therapeutic agents into the spinal disc, in accordance with the present invention. [0042]FIG. 9 shows a kit, including a syringe, a needle, and an energy delivery device for treating a spinal disc, in accordance with the present invention. [0043] FIGS. 10A-10C are cross-sectional views o