It is degeneration of vertebral column from any cause in your neck. It is also referred as spinal osteoarthritis, the age related wear & tear of the spinal column, which is the most important cause of spondylosis. The degenerative process in osteoarthritis chiefly affects the vertebral bodies, neural foramina & facet joints. If degeneration gets severe it may cause pressure on spinal cord or nerve roots with sensory or motor disturbances.