Table 1.
Beaded | Large pore foam | Small pore foam | Beaded | Large pore foam | Small pore foam | Beaded | Large pore foam | Small pore foam | ||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Bone ingrowth (mm2) | Bone ingrowth (% void) | Bone ingrowth (% total) | ||||||||||||
0 | 0.1 ± 0.1 | 0.2 ± 0.1 | 0.1 ± 0.1 | 0 | 1.5 ± 0.8 | 1.7 ± 0.7 | 1.1 ± 0.7 | 0 | 0.6 ± 0.5 | 1.3 ± 0.6 | 0.8 ± 0.5 | |||
3 | 1.2 ± 0.6 | 1.4 ± 0.5 | 1.4 ± 0.2 | 3 | 18.3 ± 8.0 | 9.1 ± 3.1 | 9.5 ± 1.5 | 3 | 5.8 ± 2.6 | 7.1 ± 2.5 | 7.6± 1.3 | |||
6 | 1.3 ± 0.5 | 1.0 ± 0.3 | 1.1 ± 0.3 | 6 | 18.9 ± 8.3 | 7.7 ± 2.4 | 7.8 ± 2.5 | 6 | 6.2 ± 2.3 | 5.2 ± 1.5 | 5.9 ± 1.9 | |||
12 | 1.7 ± 0.3 | 1.7 ± 0.3 | 1.5 ± 0.4 | 12 | 26.6 ± 6.1 | 11.4 ± 2.5 | 10.5 ± 1.8 | 12 | 8.1 ± 1.5 | 8.8 ± 1.6 | 8.0 ± 1.7 | |||
Bone ingrowth (mm2) | Bone ingrowth (% void) | Bone ingrowth (% total) | ||||||||||||
Time 0 | Distal | 0.1 ± 0.2 | 0.3 ± 0.1 | 0.2 ± 0.1 | Time 0 | Distal | 1.7 ± 2.5 | 1.8 ± 1.0 | 1.5 ± 1.2 | Time 0 | Distal | 0.6 ± 0.8 | 1.4 ± 0.7 | 1.1 ± 0.8 |
Mid | 0.1 ± 0.1 | 0.2 ± 0.2 | 0.1 ± 0.1 | Mid | 0.7 ± 0.8 | 1.5 ± 1.4 | 0.8 ± 0.8 | Mid | 0.4 ± 0.6 | 1.2 ± 1.1 | 0.6 ± 0.6 | |||
Prox | 0.2 ± 0.2 | 0.3 ± 0.2 | 0.1 ± 0.1 | Prox | 2.2 ± 3.1 | 1.8 ± 1.1 | 1.1 ± 0.7 | Prox | 0.9 ± 1.0 | 1.4 ± 0.9 | 0.8 ± 0.5 | |||
3 wks | Distal | 1.7 ± 0.7 | 2.0 ± 1.2 | 2.5 ± 1.1 | 3 wks | Distal | 25.8 ± 9.4 | 12.7 ± 7.4 | 17.3 ± 7.5 | 3 wks | Distal | 8.3 ± 3.2 | 10.0 ± 6.0 | 13.9 ± 6.2 |
Mid | 0.9 ± 0.6 | 0.9 ± 0.9 | 0.9 ± 0.5 | Mid | 13.4 ± 8.7 | 5.8 ± 6.0 | 6.3 ± 3.4 | Mid | 4.2 ± 2.7 | 4.5 ± 4.8 | 4.9 ± 2.5 | |||
Prox | 1.0 ± 0.8 | 1.3 ± 0.7 | 0.7 ± 0.3 | Prox | 15.6 ± 11.7 | 8.8 ± 5.4 | 5.0 ± 2.2 | Prox | 5.0 ± 3.9 | 6.7 ± 3.9 | 3.9 ± 1.8 | |||
6 wks | Distal | 1.9 ± 1.0 | 1.9 ± 0.7 | 2.1 ± 1.1 | 6 wks | Distal | 27.6 ± 12.9 | 14.8 ± 6.1 | 15.1 ± 7.8 | 6 wks | Distal | 9.3 ± 4.8 | 9.9 ± 3.6 | 11.5 ± 5.9 |
Mid | 1.0 ± 0.6 | 0.5 ± 0.4 | 0.6 ± 0.4 | Mid | 14.8 ± 9.6 | 3.5 ± 3.2 | 4.2 ± 2.6 | Mid | 4.7 ± 2.9 | 2.4 ± 2.1 | 3.2 ± 2.0 | |||
Prox | 1.0 ± 0.6 | 0.6 ± 0.5 | 0.6 ± 0.2 | Prox | 14.3 ± 8.5 | 4.7 ± 3.5 | 4.0 ± 1.8 | Prox | 4.6 ± 2.6 | 3.3 ± 2.5 | 3.1 ± 1.3 | |||
12 wks | Distal | 1.9 ± 0.7 | 1.5 ± 1.1 | 1.7 ± 1.3 | 12 wks | Distal | 29.5 ± 12.4 | 9.8 ± 7.3 | 11.8 ± 9.0 | 12 wks | Distal | 9.1 ± 3.5 | 7.6 ± 5.8 | 8.9 ± 7.0 |
Mid | 1.3 ± 0.6 | 1.5 ± 0.9 | 0.9 ± 0.8 | Mid | 21.3 ± 8.9 | 9.6 ± 6.5 | 6.8 ± 5.6 | Mid | 6.5 ± 2.7 | 7.4 ± 4.9 | 5.0 ± 4.0 | |||
Prox | 1.8 ± 0.7 | 2.2 ± 1.8 | 1.9 ± 1.7 | Prox | 29.0 ± 11.3 | 14.7 ± 11.1 | 13.0 ± 11.5 | Prox | 8.7 ± 3.4 | 11.5 ± 9.5 | 10.1 ± 9.5 |