Efficacy and safety of motor cortex stimulation for chronic neuropathic pain: critical review of the literature

The authors systematically reviewed the published literature to evaluate the efficacy of and adverse effects after motor cortex stimulation (MCS) for chronic neuropathic pain.A search of the PubMed database (1991-2006) using the key words "motor cortex," "stimulation," and "pain" yielded 244 articles. Only original nonduplicated articles were selected for further analysis; 14 studies were identified for critical review. All were series of cases...