In arthritis of the spine, cartilage becomes brittle and wears away. The cartilaginous discs or cushions between the bodies of the vertebrae - the bones of the spine - degenerate, resulting in narrowing of the disc space and pain. The cartilage caps of the facet joints wear, which causes pain and loss of flexibility. Further, the narrowed space and the spurring can pinch the spinal nerves, resulting in pain and tingling down the legs
Osteoarthritis in the spine is anatomically divided into 2 sections of the spine:
Lumbar Spine (lower back)
Osteoarthritis, sometimes called lumbosacral arthritis, which produces stiffness and pain in the lower spine and sacroiliac joint (between the spine and pelvis).
Cervical Spine (neck)
Osteoarthritis, sometimes called cervical spondylosis (spondy- implies the spine, and -osis is an abnormal condition), which can cause stiffness and pain in the upper spine, neck, shoulders, arms and head.
What is cartilage
Cartilage is a firm, rubbery substance that covers the ends of bones in normal joints. Its main job is to act as a shock absorber and reduce friction in joints.



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