<prompt> Unna boot is used for treatment of -Diabetic foot ulcerVaricose ulcersAnkle instabilityCalcaneum fracture  <response>: Ans. is b i.e.,Varicose ulcers Unna Boot It is named for the dermatologist Paul Gerson Unna. This boot can be used to treat uninfected nonnecrotic leg and foot ulcers that result from such conditions as venous insufficiency varicose ulcers and stasis dermatitis. 