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spondylosis spon·dy·lo·sis (spŏn'dl-ō'sĭs)
Ankylosis of the vertebral bones.
A degenerative disease of the spinal column, especially one leading to fusion and immobilization of the vertebral bones.
noninflammatory degenerative disease of the spine resulting in abnormal bone development around the vertebrae and reduced mobility of the intervertebral joints. It is primarily a condition of age and occurs much more commonly in men than in women; onset of symptoms is gradual, but untreated spondylosis will progress to disabling tingling pain, limited motion, and partial paralysis in affected areas of the body. The lumbar and cervical spine are more frequently affected than the thoracic spine, because curvature of the latter prevents spondylosis from impinging on the spinal cord; lumbar and cervical spondylosis frequently occur simultaneously in the same individual.