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spondylosis (spon-di-loh-sis) n. a spinal condition resulting from degeneration and flattening of the intervertebral discs in the cervical, thoracic, or lumbar regions. Symptoms include pain and restriction of movement. Treatment includes analgesics, NSAIDs, and physiotherapy; painful movements are prevented by wearing a neck orthosis (when the neck region is affected) or a lumbosacral corset (for the lower spine). Very severe cases sometimes require surgical fusion.