lateral marginal vein lateral marginal vein the lateral marginal vein is a continuation of the dorsal venous arch of the foot. it is the origin of the small saphenous vein. lateral marginal veindetailsdrains fromdorsal venous arch of the footdrains tosmall saphenous veinidentifierslatinvena marginalis lateralis pedista98a12.3.11.020ta25086fma44359anatomical terminology