Introduction
Materials and methods
Sizes for all groups | Dimensions Height × base area (cm × cm2) | Cross sectional area (CSA, cm2) | Implant volume (IV, cm3) |
---|---|---|---|
Small | 1.5 × 0.78 | 1.5 | 1.2 |
Medium | 2.0 × 1.13 | 2.4 | 2.3 |
Large | 2.5 × 1.54 | 3.8 | 3.5 |
Spacer implantation
Magnetic resonance imaging
Statistical analysis
Spacer material | Size | MAAa cm2
Mean ± SD | Ratio CSA:MAA | TAVa cm2
Mean ± SD | Ratio IV:TAV |
---|---|---|---|---|---|
Group I MgAlMn50 (n = 3) | Small | 1.91 ± 0.04 | 1:1.3 | 1.83 ± 0.09 | 1:1.5 |
Medium | 3.26 ± 0.06 | 1:1.4 | 4.17 ± 0.09 | 1:1.8 | |
Large | 4.06 ± 0.07 | 1:1.2 | 5.08 ± 0.15 | 1:1.3 | |
Group II TiAl6V4 (n = 3) | Small | 3.26 ± 0.04 | 1:2.2 | 5.71 ± 0.09 | 1:4.8 |
Medium | 4.61 ± 0.23 | 1:1.9 | 9.32 ± 0.10 | 1:4.1 | |
Large | 5.54 ± 0.04 | 1:1.6 | 10.84 ± 0.13 | 1:2.9 | |
Group III CFRP (n = 3) | Small | 1.89 ± 0.07 | 1:1.3 | 1.81 ± 0.07 | 1:1.5 |
Medium | 3.18 ± 0.06 | 1:1.3 | 4.09 ± 0.11 | 1:1.7 | |
Large | 4.06 ± 0.13 | 1:1.2 | 5.08 ± 0.13 | 1:1.3 |
Results
Spacer material | Size |
P valuea
| |
---|---|---|---|
MAA | TAV | ||
Group I versus group II | Small | ≤0.001 | ≤0.001 |
Medium | ≤0.001 | ≤0.001 | |
Large | ≤0.001 | ≤0.001 | |
Group I versus group III | Small | 0.59 | 0.61 |
Medium | 0.09 | 0.26 | |
Large | 1.0 | 0.96 |