In the late stages of spinal degeneration, bone spurs from the degenerative process can cause spinal
stenosis. These narrow the size of the
spinal canal. Bone spurs begin to press on the
spinal cord
and the nerve roots. pressure on these nerves in the spinal cord can cause numbness, tingling or pain in arms, hands and legs. This is the cervical myelopathy and is the worsened scenario from a single nerve root pinched by a herniated disc or bone spur.