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The 'Bamboo spine' in Ankylosing Spondylosis!(back to contents)

The earliest changes involve the sacroiliac joints.The joint margins become hazzy and the joint space is widened. This is followed by subchondral erosion and sclerosis.On the final stages, the sacro iliac joints show total fusion.

In the early stages the lumbar spine shows squaring of the vertebral bodies. Later on, extensive calcification of the lateral ligaments produces the Banboo spine apperrance in the anteroposterior view.The interspinous ligaments are also calcified.




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