THE ANGIOARCHITECTURE OF SKIN FLAP ON THE ABDOMEN / 解剖学报

ABSTRACT

A study on abdominal skin flaps of the fresh cadavers of young men under the operation, light and scanning electron microscope, and MAS image analysis system has been made. Methods include Chinese ink, ABS or methyl methacrylate injection and histological slides, transparent specimens as well as casts preparation. The course of the vessels in the human abdominal skin flap is in the "three steps form". Trunks and main branches of the cutaneous vessels run in the deep part of the superficial fascia, their branches and terminals form anastomoses in the middle of the reticular layer of dermis, and branches from the anastomoses form microvascular network in the subpapillary layer. The vascular networks in the skin flap are concentrated in five layers the deep fascial, superficial fascial, profund dermal, subpapillary, and papillary layers. Between the subpapillary and the profund dermal vascular networks, there is a layer devoid of vascular network and crossed by vascular arteries only. Therefore, this layer may be called as "vascular network devoid area". The differences of the area fraction (Aa) or number of vessels are not significant among various areas of the abdominal skin flap. Design in detaching the abdominal skin flaps and skin grafts is discussed.