There are many things that can cause this, but one of the most common is cervical spondylotic myelopathy, which happens when the spine changes with age. This condition is more common in individuals ...
Anterior cervical discectomy and fusion ... of single or multiple level disc disease. [4] The disc is removed anteriorly; discs that are herniated either laterally or midline can be removed.
Four-level cervical disc replacement is rare, but a small study published in the October issue of the International Journal of Spine Surgery found the procedure ...