Some patients with chronic back pain who have had no relief of pain inspite of pain killers, physiotherapy, nerve root and facet and S.I blocks, multiple disc surgeries including fusion, continue to have back pain. These patients, labeled as suffering from failed back syndrome, may respond to spinal cord stimulator.  This involves passing and electrode over the covering of the spine (dura) and connecting it to a subcutaneously placed pace maker. A permanent pace maker is only placed after a trial of spinal cord stimulation is shown to give pain relief.

Once pacemaker is implanted, the battery should last five to 10 years. When a pacemaker's battery wears out, the pacemaker's pulse generator is replaced.