RT Book, Section A1 Phillips, Raymond E. SR Print(0) ID 1175311464 T1 Preface T2 Venous Insufficiency YR 2021 FD 2021 PB McGraw Hill PP New York, NY SN 9781260461268 LK dermatology.mhmedical.com/content.aspx?aid=1175311464 RD 2024/03/28 AB Venous Insufficiency provides a practical approach to recognize and to treat the disorder of the valves in veins of the leg. The concepts involved are not difficult to understand. What is demanding is the day‐to‐day application of measures to counter the unrelenting effect of gravity on the circulation of the lower body. Such is the burden we bipeds assume for challenging gravity with our extended upright activity. What is truly remarkable is the exquisite coordination of muscles and valves that enable the venous system of the lower limbs to function normally.