Associated conditions Originally thought to be associated only with rheumatic fever, it has since been shown to occur also in SLE, Sjögren syndrome, scleroderma, dermatomyositis, psoriatic arthritis, vasculitis, ankylosing spondylitis, mixed connective tissue disease, and pyrophosphate deposition disease. It is distinct from bone erosion which is commonly associated with rheumatic arthritis, and also distinct from mild deforming arthropathy which is associated with SLE. There have also been cases of non-rheumatic JA associated with Lyme disease, HIV-infection and a number of other conditions. Diagnosis Plain hand radiographs typically show marked ulnar subluxation and deviation at the metacarpophalangeal joints. Absence of erosions is a notable feature, although occasionally "hook" erosions may be observed, which are similar to those seen in SLE and ankylosing spondylitis. Evidence of muscle (soft tissue) atrophy also may be present.
Jaccoud arthropathy
Facet joint arthrosis
Crystal arthropathy
Glossitis
Hypertrophic osteoarthropathy
Neuropathic arthropathy
Enthesitis
Bursitis