Risk factors for venous ulceration

Direct risk factors
  • Varicose veins

  • Deep vein thrombosis

  • Chronic venous insufficiency

  • Poor calf muscle function

  • Arterio-venous fistulae

  • Obesity

  • History of leg fracture

Indirect risk factors
  • All risk factors leading to deep vein thrombosis including protein-C, protein-S, and anti-thrombin III deficiency

  • Family history of varicose veins

  • A history of minor trauma prior to the development of ulceration may also be identified