Entesis, entesopatía y espondiloartritis

spondyloarthritis are a heterogeneous group of inflammatory joint diseases, which share clinic and laboratory characteristics, a strong relation to hereditary factors (mainly antigen hla-b27), enthesesitis (most commonly affecting axial skeleton), large joints asymmetric arthritis mostly in lower limbs, and its relationship with infections as a triggering factor. spondyloarthitis include various subtypes: psoriatic arthropathy (psa), undifferentiated spondiloarthritis (uspa), arthritis related to inflammatory bowel disease (ibd), ankylosing spondylitis (as) and reactive arthritis (rea). fundamental histopathologic characteristic of the spondyloarthritis is enthesitis on the sites of attachment of tendons, ligaments, joint capsules and fascias to the bone, but also over the cartilage at the subchondral bone.