What is an Ulcer?
An ulcer (non-healing sore) in the skin refers to a place where the normal skin covering has been wiped away and the subcutaneous tissue under the skin shows through. Most common cause of ulcers between the knee and the foot is leaking venous valves causing high pressure and abnormal circulation in the tiny vessels of the skin. Ulcers represent a late stage of lower extremity vein disease when the abnormal circulation from long standing reflux in the superficial or other veins causes the skin to become thickened and inflamed and it actually breaks down into an open sore.
Ulcers may affect anyone with abnormal venous mechanics but they are more common in older people, and are about equally frequent in men and women. Venous leg ulcers can be painful or painless. Without proper treatment, an ulcer may grow progressively larger until it encircles the leg and causes severe disability for the individual. What Are Some Causes of Leg Ulcers?