Spondylosis refers to age-related degenerative changes within the spinal column. Radiographic evidence of cervical spondylosis is frequent in asymptomatic adults. Approximately 25% of individuals over forty years of age, and 85% of individuals over sixty years of age have some degree of disc degeneration. Occupations that place increased loads on the head predispose individuals to the development of cervical spondylosis. Activities such as rugby, soccer, and horseback riding and occupations such as flying fighter jets may also predispose individuals to the development of cervical spondylosis.