hallux valgus

Background

Bunion

- medial prominence of head of 1st MT

Hallux Valgus

- medial deviation 1st MT

- lateral deviation of great toe

Metatarsal head

- has 2 grooves separating ridge (cristae)

Disorder of immune system

- antigen-antibody complexes

- stimulate release of proteolytic enzymes

- leading to vasculitis, synovitis and cartilage destruction

Articular Effects

- synovitis

- ligamentous and capsular laxity

- cartilage destruction

- osseous erosion

Vasculitis

- rheumatoid nodules