<unk>  is spinal degeneration and deformity of the joint(s) of two or more vertebrae that commonly occurs with aging. Often there is herniation of the nucleus pulposus of one or more intervertebral discs and/or formation of osteophytes.
When the space between two adjacent vertebrae narrows, compression of a nerve root emerging from the spinal cord may result in sensory system and motor system disturbances, such as severe pain in the neck, shoulder, arm, back, and/or leg, accompanied by muscular weakness. Less commonly, direct pressure on the spinal cord may result in global weakness, gait dysfunction, loss of balance, and loss of bowel and/or bladder control. The patient may experience a phenomenon of shocks in hands and legs because of nerves contraction and lack of blood flow. If vertebrae of the neck are involved it is labeled Cervical<unk> .  Lower back<unk>  is labeled Lumbar<unk> .
Spondylosis
Spondylolysis
Spondylopathies
Spondyloarthropathy
Amyloid arthropathy
Spondylodiscitis
Osteoarthritis
Ankylosing spondylitis