midfoot

General Concepts

Definition 

 

Disorder of immune system 

- antigen-antibody complexes

- stimulate release of proteolytic enzymes

- leading to vasculitis, synovitis and cartilage destruction

 

Characterised

 

Articular Effects

- synovitis

- ligamentous and capsular laxity

- cartilage destruction

- osseous erosion

 

Vasculitis

- rheumatoid nodules