Table
3: Values
of tBMD, trabecular microstructural parameters, and
mechanical properties.
|
|
Vertebrae that would fracture |
Vertebrae that would not fracture |
|
Number
of vertebrae |
22 |
41 |
|
Lytic
lesion (mm2) |
41.7 ±
70.3** |
9.8 ±
26.8 |
|
tBMD |
78.5 ± 26.5 |
84.1 ±
31.4 |
|
Ratio to mean value |
-3.5 ±
7.9* |
1.9 ±
11.0 |
|
Microstructural
parameters |
|
|
|
App
BV/TV (%) |
29.1 ± 10.0 |
30.9 ± 11.7 |
|
Ratio to mean value |
-3.1 ±
8.3* |
1.7 ±
10.7 |
|
App Tb.N (1/mm3) |
0.31 ± 0.07 |
0.32 ± 0.07 |
|
Ratio to mean value |
-2.0 ±
6.9 |
1.1 ±
9.2 |
|
App Tb.Th (μm) |
703.0 ±
116.2 |
707.5 ±
109.2 |
|
Ratio to mean value |
-0.35 ±
3.8 |
0.18 ±
5.3 |
|
App Tb.S (μm) |
877.3 ±
228.3 |
859.6 ±
250.7 |
|
Ratio to mean value |
1.9 ±
6.2* |
-1.0 ±
6.9 |
|
SMI |
1.73 ± 0.36 |
1.66 ± 0.44 |
|
Ratio to mean value |
3.9 ±
10.0** |
-2.1 ±
7.5 |
|
Euler’s
number |
-877.5
± 626.0 |
-981.4 ±
694.6 |
|
Ratio to mean value |
0.72 ±
25.5 |
-0.39 ±
41.2 |
|
Degree
of anisotropy |
1.45 ±
0.19 |
1.43 ±
0.23 |
|
Ratio to mean value |
1.0 ±
2.8 |
-0.53 ±
5.3 |
|
Mechanical
properties |
|
|
|
Failure
load (N) |
2754 ±
1758 |
2898 ±
1576 |
|
Ratio to mean value |
-7.8 ±
16.9** |
4.2 ±
18.0 |
Data are means ± SD. Ratio to mean
values are mean percent change ± SD. tBMD: Tissue
Bone Mineral Density; Ratio to mean value, Ratio to mean value from the three
adjacent vertebrae; app BV/TV: Apparent Bone Volume Per Tissue Volume; App Tb.N: Apparent Trabecular Number; App Tb.Th:
Apparent Trabecular Thickness; App Tb.S: Apparent
Trabecular Spacing; SMI: Structure Model Index
**p < 0.05, *p < 0.01