Cervical disc replacement is a surgical procedure used to remove the degenerated disc and replace it with an artificial disc. The surgery is conducted to relieve the symptoms caused by narrowing of the vertebrae or increased pressure on the spinal cord by the cervical disc. The symptoms may include numbness, weakness, and pain in the spinal cord.
The pain may arise from the degenerated disc itself. It may also arise from other structures such as small joints (facet joints) present at the back of the spine that may become overloaded due to narrowing or degeneration of the cervical disc.
The narrowing of the cervical disc progresses gradually, which results in the sinking of vertebrae on the lower one. This puts an extra pressure on the facet joints, which may eventually pinch the nerve root. This may give rise to pain in the legs and other related symptoms.