Table 1.

Vascular Histomorphometry of Allografts at 21 days of Healing

Parameters	Placebo	PTH
Region of Interest (ROI) Area (mm2)	13.85 ± 3.72	18.55 ± 0.93
Vessel Count	74 ± 30	137 ± 39*
Vascular Area (mm2)	0.32 ± 0.12	0.46 ± 0.12*
Vascular Surface (mm)	17.17 ± 4.99	30.12 ± 7.84*
Vascular Count per ROI Area	5.41 ± 2.25	7.44 ± 2.17*
Vascular Surface per ROI Area	1.28 ± 0.41	1.63 ± 0.42*

Pilot (n=5) histomorphometry was performed on the histology described in Figure 1 in which the 6mm mid diaphyseal area of the allografted femurs were used as the ROI (4mm of graft + 1mm of host at both proximal and distal graft-host junctions). The data are presented as the mean ± SD

^*p<0.05 vs. Placebo.