The ultimate surgical treatment for lumbar disc herniation: Nucleus pulposus removal + intervertebral bone graft fusion + internal fixation; our department has improved this procedure: nucleus pulposus removal + intervertebral bone graft fusion + unilateral internal fixation. It is characterized by minimally invasive, fast recovery and low price. Suitable for: 1, combined with lumbar instability; 2, extreme lateral lumbar disc herniation; 3, congenital spinal stenosis or degenerative lateral saphenous fossa stenosis; 4, giant disc herniation with or without cauda equina symptoms; 5, recurrence after nucleus pulposus removal.