Table 2

Semi-Quantitative Histological Analysis Results. Data are presented as Median [Range].

	6 weeks				12 weeks
	TPS	AM	AM+HA	AM+Auto	TPS	AM	AM+HA	AM+Auto
Bone Maturation at Surface	2 [0 – 4]	2 [1 – 3]	2 [1 – 2]	2 [2 – 2]	3 [1 – 4]	2 [1 – 3]	2 [1 – 4]	3 [2 – 4]
Bone Maturation within Center	N/A	0 [0 – 2]	1 [0 – 2]	1 [0 – 3]	N/A	2 [0 – 3]	1 [0 – 2]	2 [0 – 4]

TPS = titanium plasma spray, AM = additive manufactured, AM+HA = additive manufactured with hydroxyapatite, AM+Auto = additive manufactured with autograft. Scale is as follows: 0 = <25% lamellar bone, 1 = 25-50% lamellar bone, 2 = 50:50 lamellar to woven bone, 3 = 50-75% lamellar bone, 4 = >75% lamellar bone.