====== Enthesopathy ======

If the condition is known to be inflammatory, it can more precisely be called enthesitis.
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non granulomatous inflammatory changes at the entheses (attachment points of ligaments, tendons, or capsules on bones; the locus of involvement in AS) stimulates re-placement of ligaments by bone, ultimately resulting in osteoporotic VBs, calcified intervertebral discs (sparing the nucleus pulposus), and ossified ligaments, producing square-appearing VBs with bridging syndesmophytes, the so-called “bamboo spine” or “poker spine.” Extra-articular manifestations (EAMs) include anterior uveitis, inflammatory bowel disease (IBD), and [[psoriasis]].