Table 2.

Total and regional periprosthetic bone measurements from BSE imaging (mean ± standard deviation), presented as the area occupied (mm²) by periprosthetic bone within the implants and as a percent of the available void space (bone marrow) at time 0, 3, 6, and 12 weeks post-operation.

		Beaded	Large pore foam	Small pore foam			Beaded	Large pore foam	Small pore foam
Periprosthetic bone (mm2)					Periprosthetic bone (%)
0		2.7 ± 1.2	2.3 ± 0.7	2.8 ± 0.6	0		14.0 ± 6.1	12.5 ± 3.7	15.3 ± 3.0
3		5.3 ± 1.5	4.3 ± 1.1	3.9 ± 0.7	3		27.7 ± 7.7	23.2 ± 5.9	21.7 ± 4.0
6		4.1 ± 0.9	3.8 ± 0.8	4.0 ± 1.3	6		21.4 ± 4.9	20.5 ± 4.4	22.0 ± 6.9
12		4.2 ± 0.9	4.0 ± 0.7	3.9 ± 0.7	12		21.9 ± 4.7	21.2 ± 3.8	21.7 ± 3.7
Periprosthetic bone (mm2)					Periprosthetic bone (%)
Time 0	Distal	4.5 ± 2.7	4.4 ± 1.8	4.0 ± 1.4	Time 0	Distal	23.7 ± 14.1	24.0 ± 9.2	22.1 ± 7.8
	Mid	1.0 ± 1.1	0.9 ± 0.9	1.2 ± 0.8		Mid	5.1 ± 5.5	4.7 ± 4.8	6.5 ± 4.0
	Prox	2.5 ± 2.0	1.6 ± 1.9	3.2 ± 1.9		Prox	13.3 ± 10.5	8.8 ± 10.1	17.4 ± 10.3
3 wks	Distal	6.3 ± 2.5	5.5 ± 3	7.1 ± 2.1	3 wks	Distal	33.2 ± 13.0	29.4 ± 16.5	39.4 ± 11.4
	Mid	2.7 ± 2.4	2.1 ± 2.2	0.9 ± 0.8		Mid	14.1 ± 12.9	11.1 ± 11.4	4.9 ± 4.5
	Prox	6.8 ± 3.4	5.5 ± 2.6	3.8 ± 2.0		Prox	35.8 ± 18.0	29.0 ± 13.0	20.8 ± 11.1
6 wks	Distal	6.0 ± 3.2	5.5 ± 2.7	5.5 ± 3.2	6 wks	Distal	31.5 ± 16.7	29.0 ± 14.4	29.9 ± 17.5
	Mid	1.7 ± 1.3	0.9 ± 0.9	1.4 ± 1.2		Mid	8.7 ± 6.9	4.9 ± 4.8	7.5 ± 6.4
	Prox	4.6 ± 2.8	5.1 ± 3.2	5.2 ± 3.4		Prox	23.9 ± 14.5	27.7 ± 17.5	28.6 ± 18.4
12 wks	Distal	5.0 ± 2.2	5.1 ± 2.3	5.1 ± 1.7	12 wks	Distal	26.4 ± 11.8	27.1 ± 12.1	28.1 ± 9.8
	Mid	1.9 ± 1.4	2.1 ± 1.2	1.6 ± 1.2		Mid	9.8 ± 7.5	11.1 ± 6.6	8.7 ± 6.4
	Prox	5.7 ± 3.1	4.7 ± 2.8	5.1 ± 2.9		Prox	29.5 ± 16.1	25.5 ± 15.0	28.2 ± 15.3