Fig. 9

Typical case: The 60-year-old male patient was hospitalized for 2 months due to numbness in both upper limbs and unstable walking. C4/5 intervertebral disc prolapsed (Fig. 9A), and the fusion cage was implanted in the expanded state. At the last follow-up, the intervertebral disc height decreased and the cervical spine curvature became straight (Fig. 9C)