Chronic pain affects up to 20% of people in developed countries, and represents not only a profound impact on individuals and their families but also a sizeable burden on employers, health care systems, and society in general.

Management of chronic pain varies greatly between nations and even within nations. Literature supports a multidisciplinary approach as the standard of care, although various health care systems may not always support this concept consistently.

A new study published in the Journal of Pain Research evaluates another safe and effective drug-free treatment option for chronic pain sufferers — spinal cord stimulation (SCS).

Spinal cord stimulation, also known as dorsal column stimulation, uses low-voltage electrical stimulation to the spine to block the feeling of pain, via a small device implanted in the body. The field of neuromodulation for the treatment of pain has developed rapidly since the seminal paper on the electrical inhibition of pain by the stimulation of the dorsal column almost 50 years ago. (Shealy CN, Mortimer JT, Reswick JB. Electrical inhibition of pain by stimulation of the dorsal columns: preliminary clinical report. Anesth Analg. 1967;46(4):489-491)

Patients typically undergo a trial of neuromodulation with an externalized power source and if this trial proves to be positive and compelling, they subsequently have a subcutaneously implantable pulse generator for the long-term therapy.

Spinal cord stimulation technologies are fast advancing, and an update of the literature was much needed. The newest study, authored by an Australian team, looks at recent evidence for safety, efficacy and cost-effectiveness of spinal cord stimulation in back and limb pain.

In recent years, the next phase in the evolution of neuromodulation has become available with the development of dorsal root ganglion (DRG) SCS and the emerging use of two novel advances in stimulation frequencies, being high-frequency SCS (at 10,000 Hz) and burst SCS.14-19 These recent advances have improved the efficacy and expanded the applicability of SCS.

The authors reviewed the scientific evidence from three studies looking at the different routes of spinal cord stimulation: dorsal root ganglion SCS, burst wave form SCS and high frequency 10 (HF10) SCS. They found that the literature supports the use of traditional SCS for chronic pain, and provides high-quality evidence that dorsal root ganglion SCS and HF10 SCS are safe and effective for back and leg chronic pain.

Lead author Paul Verrills from the Metro Pain Group in Melbourne, Australia, thinks the study findings represent “unheralded evidence that we can safely treat back and leg pain using spinal cord stimulation techniques.” Most importantly, spinal cord stimulation has relatively few side effects compared to other chronic pain therapies, and reduces the risks of complications.

Verrills goes on to say, “Spinal cord stimulation should now be considered earlier in the treatment continuum and not simply as an end-stage salvage therapy.”