吻合血管髂骨移植后微血管造影的观察

本文对12个吻合血管和8个不吻合血管的髂骨移植标本进行了微血管造影观察。11个吻合血管通畅的标本,移植骨内均有微血管分布,与宿主骨结合部的微血管主要来源于移植骨及骨膜,说明了移植物是存活的,并参与了和宿主骨的愈合。8个不吻合血管的髂骨移植标本中,4周以内的标本均未见微血管分布,8周以后的标本内见有少量周围软组织的微血管长入移植骨,说明传统骨移植的“爬行替代”较为缓慢。

Microangiographic Study on Living Iliac Bone Graft with Microvascular Anastomosis

The results of living iliac bone graft with microvascular anastomosis in 12 dogs were studied with microangiographic examination. Another 8 dogs with iliac bone graft without vascular anastomosis were also observed as the control. In 11 dogs with patent anastomosed vessels, microvessels were found to have distributed in the grafts two weeks after surgery. The majority of the microvessels in the newly formed bone which connected the graft and the host bone came from the graft and its periostium, only a small part of those originated from the host bone. This indicated that the bone grafts were surviving and participated in the healing process. In the dogs grafted without anastomosis, no microvessel was found in the specimens in the first four weeks after operation, only after 8 weeks, was a scanty amount of microvessels seen to have grown into the grafts from the surrounding soft tissues. This again proves that the "creeping substitution" of the vessels in the grafted bone which occurs in the conventional method of bone graft is very slow.