真皮下血管网薄皮瓣血运重建方式的实验研究

Experimental study on revascularization of Subdermal Vascular network thin flap

目的 探讨真皮下血管网薄皮瓣的成活机理。方法 分别在 3组家兔背部形成真皮下血管网薄皮瓣、真皮下血管网皮片、传统随意皮瓣。运用组织透明技术 ,观察 3组动物术后 1～7d、1 4d血管构筑变化的差异。结果 真皮下血管网薄皮瓣中段存在一血管增生快速密集区———“中介蒂” ,其血运重建过程明显早于传统随意皮瓣、真皮下血管网皮片。结论 本研究证实了“中介蒂”的存在 ,且这是真皮下血管网薄皮瓣可早期断蒂。

Objective To investigate the survival mechanism of subdermal vascular network thin flap (SVNF).Methods 24 rabbits were divided into three groups, in which the SVNF, subdermal vascular network skin graft and the traditional random flap were created respectively. Tissue hyalinization technique was used to find out the differences of vascular architecture between the three groups at the 1st—7th day, and the 14th day postoperatively.Results The results showed that the blood supply reestablished earlier in SVNF group than the other two groups.Conclusion There is a zone of rapid and intensive angiogenesis in the mid part of SVNF known as “intermediary pedicle'. This is the anatomic basis of the early pedicle division and superior survival ratio of SVNF.