Knee-length versus thigh-length graduated compression stockings in the prevention of deep vein thrombosis

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Abstract
Graduated compression stockings can reduce the incidence of deep vein thrombosis by 60 per cent1, by providing a decreasing compression gradient from the ankle towards the thigh. There is both theoretical and clinical evidence that compression of the thigh as well as the calf does not give extra benefit2,3. Although regarded as safe, improperly used stockings are not without risk. Problems are usually due to areas of localized high pressure, especially under ‘rucked up’ constricting bands of stocking. This is particularly so in the presence of ischaemia; manufacturers state that ischaemia is a contraindication to stocking use. Cases of arterial thrombosis have been reported4, as well as more frequent skin necrosis, when stockings have been used in the presence of reduced arterial blood supply5.