Ankylosing spondylitis (AS) is a chronic inflammatory disease that primarily affects the spine, causing pain, stiffness, and fusion of the joints in the spine. It belongs to a group of conditions known as spondyloarthropathies, which are characterized by inflammation in the joints and entheses. https://podiatrytube.org/index.php/2023/06/21/ankylosing-spondylitis/