Table 2.
Descriptive statistics of micro-CT parameters of intervertebral quadrant comparisons for the individual segments with reference to the direction of puncture.
| Quadrants | Group Comparison | |||||||
|---|---|---|---|---|---|---|---|---|
| Parameter | Spinal Segments | Overall M ± SD |
Q I M ± SD |
Q II M ± SD |
Q III M ± SD |
Q I vs. Q II p-Value |
Q III vs. Q II p-Value |
Q I vs. Q III p-Value |
| Parametric variables | ||||||||
| BVF (%) | Overall CC VD |
17.07 ± 4.69 | 18.49 ± 4.80 | 16.99 ± 4.74 | 15.72 ± 4.97 | |||
| 20.39 ± 3.31 | 22.41 ± 2.19 | 17.91 ± 2.92 | 20.86 ± 3.38 | 0.016 * | 0.095 | 0.364 | ||
| CS CC VD |
22.73 ± 2.46 | 23.65 ± 4.87 | 22.83 ± 0.36 | 21.72 ± 1.63 | ||||
| 21.82 ± 2.74 | 21.99 ± 3.29 | 20.55 ± 2.02 | 22.91 ± 4.10 | |||||
| TS CC VD |
13.40 ± 2.10 | 14.94 ± 2.61 | 12.84 ± 0.90 | 12.41 ± 2.64 | ||||
| 20.98 ± 3.63 | 24.24 ± 1.35 | 18.01 ± 2.63 | 20.70 ± 4.24 | |||||
| LS CC VD |
15.07 ± 2.21 | 16.88 ± 0.10 | 15.31 ± 1.75 | 13.03 ± 2.33 | ||||
| 18.38 ± 2.98 | 21.0 ± 0.52 | 15.18 ± 1.62 | 18.97 ± 2.55 | |||||
| Tb.Th (µm) | Overall CC | 159 ± 16 | 158 ± 15 | 169 ± 19 | 151 ± 10 | |||
| VD | 179 ± 14 | 186 ± 12 | 169 ± 9 | 181 ± 14 | ||||
| CS CC |
173 ± 19 | 169 ± 21 | 193 ± 3 | 159 ± 14 | ||||
| VD | 177 ± 12 | 181 ± 17 | 168 ± 7 | 182 ± 13 | ||||
| TS CC |
148 ± 9 | 146 ± 12 | 151 ± 8 | 146 ± 11 | ||||
| VD | 185 ± 10 | 195 ± 8 | 178 ± 6 | 183 ± 13 | ||||
| LS CC |
158 ± 8 | 159 ± 2 | 165 ± 2 | 148 ± 3 | ||||
| VD | 174 ± 17 | 184 ± 12 | 160 ± 3 | 177 ± 25 | ||||
| Tb.Sp (µm) | Overall CC VD |
549 ± 40 | 522 ± 24 | 564 ± 39 | 561 ± 43 | |||
| 557 ± 38 | 553 ± 46 | 548 ± 45 | 570 ± 21 | |||||
| CS CC VD |
524 ± 21 | 519 ± 11 | 534 ± 37 | 519 ± 22 | ||||
| 564 ± 44 | 591 ± 48 | 521 ± 27 | 581 ± 29 | |||||
| TS CC VD |
576 ± 41 | 540 ± 35 | 589 ± 23 | 599 ± 49 | ||||
| 552 ± 46 | 505 ± 2 | 587 ± 52 | 563 ± 33 | |||||
| LS CC VD |
547 ± 40 | 506 ± 16 | 568 ± 52 | 566 ± 2 | ||||
| 555 ± 28 | 562 ± 25 | 536 ± 45 | 567 ± 8 | |||||
| Conn.D (mm−3) |
Overall CC | 6.03 ± 2.30 | 6.95 ± 2.52 | 5.65 ± 1.49 | 5.45 ± 2.80 | |||
| VD | 5.92 ± 1,58 | 5.93 ± 0.10 | 5.95 ± 1.76 | 5.89 ± 1.75 | ||||
| CS CC |
8.44 ± 1.64 | 9.35 ± 2.69 | 7.11 ± 0.74 | 8.86 ± 0.25 | ||||
| VD | 6.39 ± 1.31 | 5.57 ± 0.86 | 7.20 ± 1.78 | 6.41 ± 1.42 | ||||
| TS CC |
4.86 ± 1.80 | 6.33 ± 0.66 | 4.92 ± 2.12 | 3.32 ± 1.46 | ||||
| VD | 6.39 ± 2.27 | 6.97 ± 2.77 | 5.88 ± 2.52 | 6.33 ± 3.24 | ||||
| LS CC |
4.79 ± 1.24 | 5.15 ± 2.28 | 5.04 ± 0.02 | 4.18 ± 1.15 | ||||
| VD | 4.99 ± 0.27 | 5.26 ± 0.19 | 4.76 ± 0.03 | 4.94 ± 0.30 | ||||
| DA (n) | Overall CC VD |
1.87 ± 0.20 | 1.89 ± 0.21 | 1.86 ± 0.21 | 1.84 ± 0.23 | |||
| 1.20 ± 0.62 | 1.69 ± 0.10 | 0.36 ± 0.03 | 1.60 ± 0.11 | <0.001 *** | <0.001 *** | 0.379 | ||
| CS CC VD |
1.66 ± 0.09 | 1.74 ± 0.12 | 1.66 ± 0.10 | 1.60 ± 0.02 | ||||
| 1.16 ± 0.63 | 1.64 ± 0.16 | 0.34 ± 0.06 | 1.49 ± 0.05 | <0.001 *** | <0.001 *** | 0.047 | ||
| TS CC VD |
2.01 ± 0.15 | 1.84 ± 0.08 | 2.11 ± 0.05 | 2.08 ± 0.13 | ||||
| 1.22 ± 0.65 | 1.60 ± 0.07 | 0.38 ± 0.03 | 1.67 ± 0.14 | 0.001** | 0.001 ** | 0.526 | ||
| LS CC VD |
1.92 ± 0.18 | 2.09 ± 0,26 | 1.83 ± 0.04 | 1.85 ± 0.12 | ||||
| 1.24 ± 0.69 | 1.71 ± 0.20 | 0.36 ± 0.01 | 1.65 ± 0.01 | 0.001 ** | 0.001 ** | 0.637 | ||
| SMI | Overall CC VD |
1.87 ± 0.28 | 1.78 ± 0.31 | 1.95 ± 0.28 | 1.89 ± 0.27 | |||
| 1.83 ± 0.19 | 1.78 ± 0.17 | 1.92 ± 0.19 | 1.79 ± 0.21 | |||||
| CS CC VD |
1.52 ± 0.13 | 1.40 ± 0.20 | 1.59 ± 0.01 | 1.56 ± 0.08 | ||||
| 1.64 ± 0.13 | 1.57 ± 0.01 | 1.79 ± 0.04 | 1.54 ± 0.10 | |||||
| TS CC VD |
2.05 ± 0.08 | 1.95 ± 0.02 | 2.09 ± 0.07 | 2.10 ± 0.01 | ||||
| 1.87 ± 0.13 | 1.88 ± 0.09 | 1.83 ± 0.20 | 1.89 ± 0.17 | |||||
| LS CC VD |
2.06 ± 0.10 | 2.0 ± 0.02 | 2.16 ± 0.12 | 2.01 ± 0.08 | ||||
| 1.99 ± 0.12 | 1.90 ± 0.03 | 2.14 ± 0.06 | 1.94 ± 0.01 | |||||
The data refer to normally distributed parameters as mean values ± standard deviation (M ± SD); CS, cervical spine; TS, thoracic spine; LS, lumbar spine; BVF, bone volume fraction; Tb.Th, trabecular thickness; Tb.Sp, trabecular separation; Conn.D, connectivity density; DA, degree of anisotropy; SMI, structure model index; CC, craniocaudal puncture; VD, ventrodorsal puncture; Q I, Quadrant I; Q II, Quadrant II; Q III, Quadrant III; P post-hoc LSD test. The levels of significance are p < 0.05 *, p < 0.01 ** and p < 0.001 ***.