Interface pressure under a ready made compression stocking developed for the treatment of venous ulcers over a period of six weeks

Background: The most important component in the treatment of venous ulcers is compression therapy. The function of compression therapy is the pressure exterted on the extrafascial and intrafascial venous system. Therefore the interface pressure of specially designed compressions stockings for the treatment of venous ulcers are in the focus of interest. Patients and methods: We examined 20 patients (6 men and 14 women) with chronic venous insufficiency in CEAP stages C(S0-4)E(P)AS(1-3)P(R)). Interface pressure was measured under the Venotrain(R) Ulcertec over an observation period of six weeks with piezoresistance sensors at four different sites on the lower leg and with the patient in different body positions. Results: Resting pressure supine at the ankle corresponded to compression class Ill and was constant over the period of six weeks (mean difference 2.8 SD 15.3 mmHg, p = 0.49). Working pressure explained as the quotient of maximum pressure during tiptoing/resting pressure in standing position was initially at the ankle 1.70 SD 0.44 and after 6 weeks 1.44 SD 0.29 (mean difference 0.27 SD 0.42, p < 0.03). Conclusions: The compression stocking maintained a therapeutically effective pressure profile over a period of six weeks. Working interface pressure was comparable to that of short-stretch compression bandages applied by an experienced bandager immediately after application.