Researchers used a musculoskeletal model to predict joint contact forces and investigate the variations of joint contact forces due to joint impairment in 18 juvenile idiopathic arthritis patients.

Erica Montefiori et al. Linking Joint Impairment and Gait Biomechanics in Patients with Juvenile Idiopathic Arthritis. Annals of Biomedical Engineering 2019; 47(11): 2155-2167

KEY POINTS: JOINT IMPAIRMENT & GAIT BIOMECHANICS IN JUVENILE IDIOPATHIC ARTHRITIS

• Juvenile idiopathic arthritis (JIA) is the commonest rheumatic condition in childhood, although the etiology remains unknown.
• JIA encompasses several subgroups but most generally presents as peripheral arthritis.
  • Clinical presentation includes fever, joint swelling and pain, hepatomegaly, lymphadenopathy, cardiac involvement, splenomegaly, and skin rashes.
• Medical imaging of JIA:
  • Ultrasound is used to assess joint synovial and tendon inflammation.
  • MRI helps with...