Long term clinical outcome of peripheral nerve stimulation in patients with chronic peripheral neuropathic pain☆
Received 8 October 2008; accepted 4 March 2009. published online 10 August 2009.
Refers to article:
Commentary
, 10 August 2009
Ron Pawl
Surgical Neurology
October 2009 (Vol. 72, Issue 4, Page 335) Full Text |
Full-Text PDF (48 KB)
Abstract
Background
Chronic neuropathic pain after injury to a peripheral nerve is known to be resistant to treatment. Peripheral nerve stimulation is one of the possible treatment options, which is, however, not performed frequently. In recent years we have witnessed a renewed interest for PNS. The aim of the present study was to evaluate the long-term clinical efficacy of PNS in a group of patients with peripheral neuropathic pain treated with PNS since the 1980s.
Methods
Of an original series of 11 patients, 5 patients could be invited for clinical examination, detailed assessment of clinical pain and QST examination. The assessments were done both during habitual use of PNS and with the stimulator off.
Results
Average pain intensity and pain unpleasantness ratings as assessed with visual analog and verbal rating scales showed significant beneficial effects of PNS. Quality of life measures (sleep and daily functioning) also showed positive effects. Quantitative Sensory Testing results did not show significant differences in cold pain and heat pain thresholds between the “ON” and “OFF” conditions.
Conclusion
In selected patients with peripheral neuropathic pain PNS remains effective even after more than 20 years.
ABSTRACT