Table 2.

Tissue Mineral Density, Bone Volume and Modulus of scaffold and tissue constructs at 4 and 8 weeks

		PLLA			50:50PLGA
		Large	Medium	Small	Large	Medium	Small
TMD (mg/cc)	4 wk	462.6 ± 12.4 (N=4)	463.4 ± 12.5 (N=5)	482.4 ± 12.1 (N=5)	482.8 ± 14.0 (N=8)	477.5 ± 21.7 (N=7)	476.2 ± 16.4 (N=5)
	8 wk	524.8 ± 21.4 (N=3)	546.0 ± 14.7 (N=5)	536.5 ± 24.4 (N=5)	534.5 ± 31.4 (N=5)	519.9 ± 22.5 (N=5)	528.7 ± 29.2 (N=5)
Bone Volume (mm3)	4 wk	13.96 ± 5.14 (N=4)	17.37 ± 6.53 (N=5)	18.66 ± 13.87 (N=5)	8.58 ± 2.08 (N=8)	11.61 ± 3.28 (N=7)	10.39 ± 2.27 (N=5)
	8 wk	9.83 ± 0.89 (N=3)	11.25 ± 3.85 (N=5)	14.71 ± 4.28 (N=5)	13.88 ± 4.76 (N=5)	15.55 ± 4.38 (N=5)	21.77 ± 11.96 (N=5)
Modulus (MPa)	0 wk	100.4 ± 56.4 (N=7)	98.9 ± 30.6 (N=7)	196.4 ± 76.7 (N=7)	197.8 ± 53.7 (N=6)	239.0 ± 102.6 (N=6)	125.1 ± 63.2 (N=5)
	4 wk	13.0 ± 4.2 (N=4)	29.4 ± 14.2 (N=4)	90.5 ± 41.7 (N=7)	0.78 ± 0.35 (N=5)	1.30 ± 0.73 (N=6)	0.80 ± 0.40 (N=4)
	8 wk	32.2 ± 31.9 (N=3)	53.7 ± 28.1 (N=5)	83.4 ± 27.3 (N=5)	5.43 ± 5.97 (N=5)	4.15 ± 1.79 (N=4)	6.62 ± 3.52 (N=4)