ankylosing spondylitis

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Related to Bamboo spine: ankylosing spondylitis

ankylosing spondylitis

[′aŋ·kə‚lōz·iŋ ‚spän·də′līd·əs]
(medicine)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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Again, the patients from this stage of the disease may or may not progress further towards the stage of new bone formation (osteoproliferation) visible as syndesmophytes and finally fusion of the vertebral bodies leading to the late radiographic stage called "bamboo spine. " These findings resulted in the concept of "the continuum of axial SpA" elegantly discussed by Rudwaleit et al.
Long-term AS is usually accompanied by pathological changes such as bony spinal stiffness, vertebral osteoporosis (bamboo spine), and significant ligament calcification of the vertebrae and intervertebral discs [10] and thus causes decreased bone strength in the spine.
Ankylosis (fusion) of the spine is typically a late-stage complication and has been nicknamed "bamboo spine", due to its appearance on X-ray.