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KMID : 1001920130540060507
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Journal of Korean Neurosurgical Society
2013 Volume.54 No. 6 p.507 ~ p.510
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Effect of Pulsed Radiofrequency Neuromodulation on Clinical Improvements in the Patients of Chronic Intractable Shoulder Pain
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Jang Ji-Su
Choi Hyuk-Jai
Kang Suk-Hyung
Yang Jin-Seo
Lee Jae-Jun
Hwang Sung-Mi
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Abstract
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Objective: The aim of this study was to evaluate effect of pulsed radiofrequency (PRF) neuromodulation of suprascpaular nerve (SSN) in patients with chronic shoulder pain due to adhesive capsulitis and/or rotator cuff tear.
Methods: The study included 11 patients suffering from chronic shoulder pain for at least 6 months who were diagnosed with adhesive capsulitis (n=4), rotator cuff tear (n=5), or adhesive capsulitis+rotator cuff tear (n=2) using shoulder magnetic resonance imaging or extremity ultrasonography. After a favorable response to a diagnostic suprascapular nerve block twice a week (pain improvement >50%), PRF neuromodulation was performed. Shoulder pain and quality of life were assessed using a Visual Analogue Scale (VAS) and the Oxford Shoulder Score (OSS) before the diagnostic block and every month after PRF neuromodulation over a 9-month period.
Results: The mean VAS score of 11 patients before PRF was 6.4±1.49, and the scores at 6-month and 9 month follow-up were 1.0±0.73 and 1.5±1.23, respectively. A significant pain reduction (p<0.001) was observed. The mean OSS score of 11 patients before PRF was 22.7±8.1, and the scores at 6-month and 9 month follow-up were 41.5±6.65 and 41.0±6.67, respectively. A significant OSS improvement (p<0.001) was observed.
Conclusion: PRF neuromodulation of the suprascapular nerve is an effective treatment for chronic shoulder pain, and the effect was sustained over a relatively long period in patients with medically intractable shoulder pain.
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KEYWORD
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Chronic pain, Failed back surgery syndrome, Spinal surgery, Spinal cord stimulation
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