Assessment of surface electromyographic clinical analysis of selective femoral neurotomy on cerebral palsy with stiff knee

► Surface EMG can objectively evaluate muscle tension and muscle strength. ► The quantity of the excised nerves is related to surface EMG. ► Surface EMG post-operation was significantly different from that of pre-operation. ► Selective femoral neurotomy can effectively improve stiff knee of cerebral palsy. ► Surface EMG can be used for objectively evaluating and guiding the neurosurgery.