γγ1, degenerative spondylolisthesis Seeking medical attention for degenerative spondylolisthesis is more common than for other types, and its symptoms can generally be resolved by conservative treatment. However, surgery is beneficial for those with severe back pain and persistent unrelieved and complicated cauda equina syndrome and nerve root compression signs. The results of clinical investigation of degenerative slippage by foreign scholars show that: (1) 70% of leg pain is sciatica and 30% is intermittent claudication; (2) 41% of vertebrogram abnormalities, and every patient with L4-L5 slippage has L5 nerve root compression instead of L4 nerve root; (3) the degree of slippage is 2-13 mm, with a mean of 4 mm; (4) age, preoperative (4) age, preoperative slippage, postoperative slippage and postoperative loss did not correlate with pain relief; (5) increased protein levels in the cerebrospinal fluid had a poor prognosis; (6) slippage could still progress 2 years after surgery; (7) the iliac crest line was below the level of the L4-5 intercalated disc in 76% of patients. The purpose of surgery is to relieve lumbar pain and relieve nerve compression. When the scope of decompression is large, internal fixation by pedicle screw system with bone graft can be considered.γγThe main purpose of surgery is to relieve pain and prevent the progression of spondylolisthesis. The indications for surgery should be strictly controlled. The use of limited fixation of the arch isthmus with bone grafting has been reported in the literature for the treatment of isthmus dislocation, first by Buck using screws through fixation with local bone grafting, and by Scott using wire around the spine of the transverse process for fixation, and local bone grafting has also been reported by Xu Shaoting et al. in China. These methods have rarely been used after the widespread use of pedicle screws. In patients with low back pain without obvious slippage, pedicle screws with hook plates are used to fix the pedicle and lamina of the diseased vertebral body with bone grafting, and better results have been achieved.