Spondylosis can lead to abnormal growths (bone spurs) on the vertebrae, spinal osteoarthritis, chronic pain, and disability. There are three types of spondylosis. These include cervical spondylosis, which affects the cervical spine of the neck. Thoracic spondylosis affects the thoracic spine of the mid and upper back, and lumbar spondylosis affects the lumbar spine of the lower back.