A venous stasis ulcer is a breakdown of the skin that is caused by fluid pooling in the lower extremity due to venous insufficiency and incompetent valves in the vein. The accumulated fluid leaks from the veins because of pressure into the tissue and causes the stasis ulcers.

The unna boot is a wrap that is kept on around-the-clock that helps to heal venous stasis ulcers. Unna’s boot is gauze soaked with zinc oxide and calamine lotion. The inelastic consistency of the unna boot, produces a pumping force on the calf when the patient ambulates. The bandage remains on for seven days then is removed and replaced with a new unna boot until healed.

Other treatments for venous stasis ulcers are the same as varicose veins: phlebectomy, compression, radiofrequency ablation, and laser ablation