Endothelial Progenitor Cell Therapy for Fracture Healing: A Dose-Response Study in a Rat Femoral Defect Model

Table 1

Radiographic scoring system.

Defect filling (%)	Callus density	Score
0	N/A	0
1–25	Low	1
	High	2
26–50	Low	3
	High	4
51–75	Low	5
	High	6
76–100	Low	7
	High	8