Microniography is a excellent technique to show the vascular changes of a small arterioles and capillaries of the tissue, especially in bone.
Its advantages is that permits a study of a micovascular structure in the continuity and the architecture of a blood surpply.
The purpose of this study is to learn a good microangiographic appearence of a vascular pattern of a fracture site and the fracture healing process, also we performed this study to show the vascular pattern of long bone.
The results were as follows :
1. We had been learned the techinique of microangiographic technical process to get good microangiogiographic specimen, and the fine quality of micriangiogram could he obtained with simple appartus.
2. We studyied the blood supply of healing process in closed fracture of the long tone by the means of microangiogram ana histological prepasations.
3. The vascular pattern at the site of the fracture, at interval from one week to four weeks after fracture, in soft tissue and periosteal regions are increased greatlythe development of newblood vessel.
4. After four weeks, with the advancement of healing, the callus of the cortex at the fracture site reveals increasing of vascularization.
5. After eight weeks of fracture, the meaullary blood supply was dominant, also was increasing vascular changes in fracture healing.
6. After 16 weeks of fracture, the medullary blood supply played adominant role in the most rapid healing of fractures, our experimental findings may be support the clinical experience.
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