FSPR surgery is performed by selectively blocking the posterior root of the spinal nerve, which is a sensory branch, not a motor nerve. By cutting the posterior root of the spinal nerve, muscle tone can be significantly reduced, so there are three advantages: 1) safety under the role of multilead electrophysiological monitoring, the application of intraoperative continuous recording of electromyography and somatosensory evoked potentials of multiple muscles of the limb, spinal evoked potentials make SPR surgery more scientific and objective basis, avoiding empirical surgery, subjective factors to determine the proportion of posterior root removal failure, minimizing the surgery It further improves the efficacy of the surgery, causes a comprehensive decrease in muscle tone, and improves balance function; 2) Small wound and quick recovery The surgical incision is small, only 3 cm, and easy to recover; 3) Significant postoperative results.