The vein system in the lower extremities is divided into three sectors, the superficial system, the deep system and perforator veins between these systems. Research studies during recent years have shown that disease in the superficial system (varicose veins) may be the sole pathology behind venous ulcers. Classification of venous disorders (CEAP classification) is used where many of the most important aspects of the disease are recorded. C stands for “clinical class” which describes the signs linked to the disorder, E stands for “etiological class” which is the identification or analysis of the cause for the disorder, A stands for “anatomical class” which describes the location of the disease and P stands for “pathophysiological class” which is a physiological analysis of the disease (reflux or obstruction).
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