Unna's paste boot

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boot

 [bo̳t]
an encasement for the foot; a protective casing or sheath.
Gibney boot an adhesive tape support used in treatment of sprains and other painful conditions of the ankle, the tape being applied in a basket-weave fashion with strips placed alternately under the sole of the foot and around the back of the leg.
Unna's paste boot a dressing for varicose ulcers, consisting of a paste made from gelatin, zinc oxide, and glycerin, which is applied to the entire leg, then covered with a spiral bandage, this in turn being given a coat of the paste; the process is repeated until satisfactory rigidity is attained.

Unna's paste boot

[o̅o̅′nəz]
Etymology: Paul G. Unna, German dermatologist, 1850-1929; L, pasta, paste; ME, bote
a dressing for varicose ulcers formed by applying a layer of a gelatin-glycerin-zinc oxide paste to the leg and then a spiral bandage covered with successive coats of paste to produce a rigid boot.