After laminectomy, the numbness can be relieved in about a month if it is around the wound, and can be recovered in about 1 to 2 years after surgery if it is caused by nerve compression. Intervertebral foramenoscopy is a minimally invasive way to contact the nerve for symptoms of compression, and the numbness after surgery may be caused by the surgical incision. This type of numbness is gradually relieved after the surgical incision heals (about 1 month after surgery). There is another type of numbness that is caused by previous compression of a nerve, and after contact with the nerve compression, the numbness takes a longer time to recover (1 to 2 years). Because this injury is caused by partial damage to the nerve, recovery of the nerve takes a relatively long time.