The following observations in this case are of interest:
1. Three months after injury the vascular bed in the region of the epiphyseal plate was still increased in all the bones about the knee as demonstrated by arteriography.
2. Proximal tibial epiphyseal separation resulted in complete lack of filling of the normal vascular bed on the metaphyseal face of the part of the epiphyseal plate traversed by the fracture line. This defect was still present three months after injury. The normal vascular bed was not altered in the small portion of the plate to which a triangular fragment of the metaphysis remained attached.
3. The growth potential of the proximal tibial epiphysis in this seven-year-old girl was not altered during the three and a half years that she was followed after injury.