[Revascularization of hypertrophic pseudoarthroses after pressure-plate osteosynthesis].

In 6 adult mongrel dogs hypertrophic pseudarthroses in the radius were produced. The pseudarthroses were stabilized by compression plate osteosynthesis. The changes in the pattern of vascularization in pseudarthroses under stabilization were studied by means of microangiography. The interfragmental gap revascularization started early and came from medullary vessels of both fragments. Vessel anastomoses in interfragmental areas were observed. With time, medullary and periosteal hypervascularization were reduced. However, the hypervascularization in the remodeled corticalis was still evident after 3 months.