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Spinal-Cord Stimulation Appears Effective for Trunk Pain: Presented at AAPM By Emma Hitt, PhD HONOLULU -- February 2, 2009 -- An analysis of more than 4,500 patients with trunk and/or limb pain suggests that treatment with spinal-cord stimulation (SCS) offers pain relief in more than two-thirds of patients treated with this approach. The findings were presented here on January 29 at the American Academy of Pain Medicine (AAPM) 25th Annual Meeting. Use of SCS for treatment of chronic pain of the trunk and/or limbs has increased by about 50%, over the past 5 years, according to the researchers, led by Cheryl D. Monroe, MPH, Advanced Neuromodulation Systems, Inc., Plano, Texas. "SCS has become a well-established treatment for certain forms of pain in patients who have failed conservative treatments," they wrote. The researchers identified 84 studies that included patients with pain in the trunk and/or limbs and used predefined outcome measures for pain. Pain measures used in the studies included a visual analogue score, more than a 50% reduction on a numeric rating scale, narcotic consumption, and comparison to a relevant control group. Patients (N = 4,584) were followed for a mean of 29.9 months. Using the various criteria for success reported in each study, they found an overall success rate for SCS of 68.5%. The greatest success rates were observed with postherpetic neuralgia (82%) and complex regional pain syndromes type 1 and 2 (80.4%), while the lowest success rate was observed with paraplegic pain (44%). They also found that among 917 patients requiring analgesia, 56.3% were able to decrease use after SCS. The subgroup of patients that benefited most from SCS, as determined by a decrease in use of analgesia, was patients with postherpetic neuralgia (94.7%). A safety analysis included 67 reports among 4,634 patients, 2,118 complications were identified. The most common complication was lead migration (incidence rate, 13.5%). Lead breakage was the next most common (7.6%). No instances of epidural haemorrhage were reported. Funding for the study was provided by Advanced Neuromodulation Systems, Inc. [Presentation title: A Review of Articles Published on Spinal Cord Stimulation Treatment for Chronic Pain Since 2001. Abstract 121] E-mail this page to a friend or colleague! To print, use this version