What causes the lower-extremity ulcers associated with venous insufficiency?

Updated: Sep 25, 2020
  • Author: Robert Weiss, MD; Chief Editor: William D James, MD  more...
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Chronic nonhealing wounds of the lower extremity have many different potential causes, but most chronic lower-extremity ulcers are of venous etiology. The majority of venous ulcers are caused by venous reflux that is purely or largely confined to the superficial venous system; only a minority are caused by chronic DVT or by valvular insufficiency in the deep veins.

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