Symptoms of nerve injury after lumbar synostosis laminectomy include lower limb pain, numbness, unfavorable movement, muscle atrophy, etc. 1. Lower limb pain or numbness: the main symptom of nerve injury after lumbar synostosis laminectomy is pain in the lower limbs, which usually occurs in the whole lower limbs, and there is also numbness, which is usually persistent and cannot be relieved by resting. 2. unfavorable activities: if the serious nerve injury will also cause unfavorable activities of the lower limbs, such as flexion of the hips and knees, ankle joints are unfavorable, and the serious ones can not walk. 3. Muscle atrophy: if the disease is longer, or the nerve damage is serious, it will also cause muscle atrophy and weakness of the lower limbs. Nerve damage after lumbar laminectomy needs to go to the hospital for rehabilitation and targeted treatment under the guidance of the doctor.