Table 1.
Trabecular architectural properties in the metaphysis and epiphysis, cortical morphological properties of the diaphysis, metaphysis, and epiphysis, or mechanical properties that did not show significant differences between control (0 cGy) and low-level irradiated (4.4 cGy) mice (mean ± SD)
| 0 cGy | 4.4 cGy | |
|---|---|---|
| Diaphysis | ||
| Cortical morphology | ||
| Ct.Ar (mm2) | 1.83 ± 0.26 | 1.94 ± 0.11 |
| Ps.Ar (mm2) | 5.11 ± 0.27 | 5.08 ± 0.21 |
| Ma.Ar (mm2) | 3.28 ± 0.23 | 3.13 ± 0.17 |
| Mechanical properties | ||
| Stiffness (N/mm2) | 90.7 ± 33.6 | 107.6 ± 31.1 |
| Ultimate load (N) | 20.6 ± 5.9 | 22.4 ± 5.1 |
| Ultimate deformation (mm) | 0.42 ± 0.10 | 0.55 ± 0.30 |
| Metaphysis | ||
| Trabecular microarchitecture | ||
| Conn.D (1/mm3) | 5.24 ± 6.59 | 10.03 ± 7.56 |
| SMI [1] | 3.48 ± 0.23 | 3.35 ± 0.31 |
| Tb.Th (mm) | 0.043 ± 0.007 | 0.044 ± 0.005 |
| Cortical morphology | ||
| Ct.Ar (mm2) | 0.90 ± 0.18 | 0.94 ± 0.05 |
| Ps.Ar (mm2) | 3.69 ± 0.21 | 3.59 ± 0.22 |
| Ma.Ar (mm2) | 2.79 ± 0.23 | 2.65 ± 0.19 |
| Epiphysis | ||
| Trabecular microarchitecture | ||
| Conn.D (1/mm3) | 137 ± 43 | 155 ± 0.34 |
| Tb.N (1/mm3) | 5.95 ± 0.20 | 5.94 ± 0.36 |
| Tb.Th (mm) | 0.047 ± 0.007 | 0.051 ± 0.003 |
| Tb.Sp (mm) | 0.18 ± 0.02 | 0.18 ± 0.01 |
| Cortical morphology | ||
| Ct.Ar (mm2) | 1.37 ± 0.19 | 1.47 ± 0.17 |
| Ps.Ar (mm2) | 4.36 ± 0.34 | 4.48 ± 0.32 |
| Ma.Ar (mm2) | 2.99 ± 0.26 | 3.01 ± 0.31 |
| Lower limb | ||
| Muscle | ||
| Gastrocnemius (g) | 0.115 ± 0.014 | 0.117 ± 0.023 |
| Tibialis anterior (g) | 0.005 ± 0.001 | 0.004 ± 0.001 |
| Soleus (g) | 0.017 ± 0.009 | 0.019 ± 0.008 |