The Effects Of Superficial Venous Trunk And Its Norishing Vessels On Revascularization Of Reverse-flow Flaps

Objective:To study the effects of superficial venous trunk (SVT) and its norishing vessels on revascularization in reverse-flow random flaps, to make clear picture of the problem whether the existence of SVT and its norishing vessels can improve the revascularization of reverse-flow flaps early in the transplantation so as to supply the theoretical evidences to the clinical applications. Methods:( 1 ) The morphologic changes of micrangium between the reverse-flow random flap with SVT and no SVT in different phase were observed by using optical microscopy, stereological methods. (2) survival study of reverse-flow flaps with SVT and no SVT of pigs.To compare the survival ratio of 2 groups of flaps including SVT and no SVT (3 ) Clinical practice of reverse-flow random flaps. Results:(1) The micrangium density of skin flaps in both of group I and group II had increasing trend after operation of 3 days.After operation of 3,5,7and 10 th day, the micrangium density in group I were much than that in group II .There is significant difference between the group, which is also proved by the optical icroscopy. ( 2 ) The reverse-flow flaps with SVT intact had the better survival ratio. (3) This flap has been used in 10 cases, all of which succeeded and no one failed. Conclusion:the micrangium density of group I is much higher than that in group II , which suggests that SVT and its norishing vessels can promote the revascularization of the flap early in the transplantation, and the clinical application of the flap shows that the SVT can be ofbenefit to the survival of reverse-flow random flap.