JUVENILE IDIOPATHIC ARTHRITIS

CHARACTERISTIC FEATURES

      • Systemic (Stills disease)
      • Persistent oligoarthritis
      • Polyarthritis (sero + or -)
      • Psoriatic
      • ERA
      • Undifferentiated
      • Imaging can be normal
      • Imaging mainly reflects synovitis
      • ..or tenosynovitis

CHARACTERISTIC DISTRIBUTION

      • Knee
      • Ankle
      • Symmetrical small joint type
      • Dactylitis in psoriatic type
      • Sacroiliitis in ERA type