Single – – Male 12 years old Spastic biparesis Posterior spinal nerve rhizotomy on September 16, 2006 Selective severance of bilateral L5/S1 partial posterior roots 1.2. Admission examination: (March 2, 2007) Clear consciousness, passive position, cooperative examination. Answers were tangential. Good bilateral eye movements, symmetrical nasolabial folds on both sides, no obvious distortion of the corners of the mouth, 3-grade proximal muscle strength and 0 grade distal muscle strength in both lower limbs, N-fossa angle 80° slightly decreased muscle strength in the right upper limb compared to the left side, normal muscle strength in the left side, poor finger-to-finger in the right hand, increased muscle tone in both lower limbs, Ashworth:4 grade, flexor contracture, hyperactive knee tendon reflexes bilaterally, Babinski’s sign on both sides ( -). Sitting balance grade 3, ADL: severe functional deficit. 1.3. Ancillary tests: Main laboratory findings: 12. 15 Liver function: alkaline phosphatase: 198 U/L; blood potassium: 5,2 mmol/l. Routine blood and urine return normal. 2. 8 Electrolytes: normal ECG: sinus rhythm, T wave mildly altered. Complete related tests (three major routine/hepatic and renal functions, ECG) Comorbidities: None 2. Methods: 2.1, exercise therapy 2.1.1, muscle pulling: supine position, straight leg elevation to do hip flexion and knee extension, continuous pulling of the N cord muscle for 1 to 2 minutes, repeated 3 times on each side to maintain and expand the mobility of the knee joint. 2.1.2, Progressive resistance muscle training method: supine position, apply quadriceps training plate for knee extension muscle training, can be tied to the child’s foot and ankle according to the child’s muscle strength, 1000G ~ 2500G sandbag resistance exercises, the weight should be increased sequentially. 30 times each. 2.1.3, eccentric isotonic muscle training method: after the child does the maximum range of knee extension, let it slowly put down the foot in a controlled manner, the muscle for eccentric isotonic contraction, in order to obtain the best muscle training effect. Placement training can also be done consciously in different spatial positions to improve the control of the knee joint. 2.1.4. Bobath training method: Stimulating percussion on the lateral edge of the heel of the child can promote muscle proprioception and skin sensation, laying the foundation for the development of standing balance and walking. 2.1.5. Standing weight training method: The therapist gives some assistance, supports his bilateral knee joints, and makes the child stand against the wall with his feet shoulder-width apart, with the center of gravity off the middle of the two feet, and the gravity line must pass through his knees. 2.2, massage: ① lower back: press and rub the Governor’s meridian p foot solar bladder meridian points, focusing on the body pillar p to Yang p sinew p central p life gate p waist Yangguan p kidney Yu p rank side p Guan Yuan Yu r palm roll both sides of the pinch point. ②Lower extremities: press and rub the thighs p blood sea p foot three li p three yin jiao p taixi p xiexi p tai chong p yongquan p ring jumping p Cheng Fu p committee zhong p yanglingquan p shingshan p hanging bell p kunlun p shen vein p foot lin weeping r roll p take the thighs to the front of the calves p lateral, palm massage p pat the thighs to the back of the calves p medial, repeated several times. ③ Knee pressure method: the child lies on his back, the operator overlaps his hands on the knee and slowly presses, reaching the pain point and lasting 1-2 minutes, then slowly relaxes and lightly pats the child’s thigh to the front and back of the calf p medial and lateral repeated several times. This method was repeated 3 times for one knee. 2.3 Biofeedback: electrodes were placed on the motor points of his quadriceps bilaterally to facilitate the conduction pathways of the central nervous system and promote the innervation of the extensor muscles of the lower limbs to produce electrical movements. 2.4 Home rehabilitation: prone position, self-stretching of the flexors of the lower limbs for 20-30 minutes, followed by the training of activities of daily living, including postural transitions with sitting position → four-point position, four-point position → wheelchair, four-point position → grasping station, and the training of self-care ability. 3. Results: After 2 months of rehabilitation training, the child’s proximal muscle strength of both lower extremities was grade 4+ and distal grade 3. The N-fossa angle was 150°, the muscle tone of both lower limbs was reduced, Ashworth:2 level, and simple position change with assisted standing could be performed.