Cervical spondylosis is a type of degenerative disease that affects your neck. Normally, soft disks between the bones in your spine (vertebrae) give cushioning. With cervical spondylosis, these disks become squeezed (compressed). Also, the facet joints and ligaments of your spine become larger and thicker. As a result, your neck becomes more stiff over time.
When this happens, the connective tissue (cartilage) that lines the vertebrae on each side of the disk where they touch can wear away. When this protective cartilage is gone, bony growths called bone spurs may form on your vertebrae where they rub together. Nerves attached to your spinal cord may have less room to pass between the vertebrae on their way out of the spine. The spinal canal is also narrowed, which can compress or reduce blood flow to the spinal cord. This can cause weakness in the arms and legs and problems with bowel and bladder function.