Generally, posterior decompression requires internal fixation and bone graft fusion to enhance the stability of cervical spine. Conservatively speaking, the neck circumference is removed in 3 months, because the stability of cervical spine is the best after bone healing and fusion, but few patients can persist for that long, so they generally do not pay attention to removing the neck circumference. Of course, it is certain to avoid violent injuries. Generally, you can turn your head after surgery and let the patient feel it first. Generally speaking, the recovery of nerves is obvious within two months, and it is getting slower and slower with the passage of time. After half a year, it basically did not recover, but the individual differences were quite large. The above is only a general statement, but also a specific analysis of the patient's condition or injury.