Table 1 The inclusion and exclusion criteria

(1) The patient is over 18 years old;

(2) The radiological results and clinical symptoms were consistent with the diagnosis of single-segment disc degeneration;

(3) Soft disc herniation;

(4) The degeneration located in C3-C7;

(1) There’re spinal protopathy, such as tumor, deformity, and infection;

(2) Serious osteoporosis;

(3) Rheumatoid arthritis;

(4) Ankylosing Spondylitis;

(5) Adjacent segment degeneration;

(6) Severe narrowing of the degenerative space;

(7) Ossification of posterior longitudinal ligaments;

(8) The patient’s mental state was unstable and he could not cooperate with the follow-up;