Spinal cord stimulation (SCS) refers to a treatment method in which the electrode of the spinal cord stimulator is placed at the back of the epidural cavity of the spinal canal to stimulate the conduction bundle of the posterior column of the spinal cord and the sensory neurons of the posterior horn through current, so as to achieve the purpose of treating pain or other diseases. （1）
In ancient times, humans knew that electricity could cure pain. In March 1967, Shealy (21) first stimulated the spinal cord by placing electrodes in the subarachnoid cavity on the surface of the dorsal column of the spinal cord through cone laminectomy. By 1975, Dooley proposed a new method of percutaneous insertion of electrodes into the dorsal epidural space of the spinal cord. However, in the next few years, due to the lack of more in-depth understanding of indications and the instability of instrument performance, it has not been widely accepted and popularized. In recent years, with the development of basic medicine and the continuous accumulation of clinical data, people have a new understanding of the treatment mechanism of SCS. Although there are still doubts about case selection and efficacy evaluation, neurogenic pain syndrome and ischemic pain have become the preferred indications. Recent clinical practice also shows that two kinds of intractable pain syndromes, neurogenic head and face pain and Central de afferent pain (such as central pain after stroke), have a better response to SCS treatment. The scope of application varies greatly in different countries. According to statistics (32), more than 10000 patients are placed with spinal cord stimulators every year, half of them in the United States and some in Europe. For some pain, SCS is effective when other methods are ineffective, but there are also ineffective cases.