Table 4. Comparing the mean (mm) and standard deviation (SD) of measurements of both men and women of all metacarpals.
| CT scan measurement | N | Sex | 1st metacarpal | 2nd metacarpal | 3rd metacarpal | 4th metacarpal | 5th metacarpal | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean | SD ± |
p -Value | Mean | SD ± |
p -Value | Mean | SD ± |
p -Value | Mean | SD ± |
p -Value | Mean | SD ± |
p -Value | |||
| Total MC length | 50 | M | 47.5 | 2.7 | 0.000 | 68.8 | 3.7 | 0.000 | 66.6 | 4.1 | 0.000 | 59.2 | 4.2 | 0.000 | 52.8 | 3.6 | 0.000 |
| 50 | F | 42.8 | 3.2 | 63.1 | 4.3 | 60.4 | 4.2 | 52.9 | 4.1 | 48.4 | 3.6 | ||||||
| MC articular length | 50 | M | 46.3 | 2.8 | 0.000 | 66.5 | 3.7 | 0.000 | 64.9 | 3.4 | 0.000 | 57.2 | 3.8 | 0.000 | 51.4 | 3.6 | 0.000 |
| 50 | F | 48.4 | 3.8 | 60.4 | 3.9 | 58.6 | 3.9 | 51.5 | 3.7 | 46.8 | 3.5 | ||||||
| Head anteroposterior | 50 | M | 12.8 | 1.5 | 0.000 | 13.4 | 1.0 | 0.000 | 13.8 | 1.1 | 0.000 | 12.8 | 0.9 | 0.000 | 11.8 | 0.8 | 0.000 |
| 50 | F | 10.8 | 0.9 | 12.1 | 0.7 | 12.4 | 0.9 | 11.3 | 0.8 | 1.5. | 0.7 | ||||||
| Head mediolateral | 50 | M | 14.8 | 1.4 | 0.000 | 13.2 | 1.2 | 0.000 | 12.8 | 1.2 | 0.000 | 11.4 | 1.0 | 0.000 | 11.1 | 1.4 | 0.003 |
| 50 | F | 13.7 | 0.9 | 12.0 | 1.0 | 11.8 | 1.1 | 10.5 | 0.9 | 10.4 | 0.7 | ||||||
| Base anteroposterior | 50 | M | 14.5 | 1.2 | 0.000 | 15.0 | 1.3 | 0.000 | 14.6 | 0.9 | 0.000 | 12.0 | 1.0 | 0.000 | 10.4 | 1.1 | 0.000 |
| 50 | F | 13.1 | 1.1 | 13.0 | 1.3 | 13.0 | 1.2 | 10.8 | 1.0 | 9.4 | 0.9 | ||||||
| Base mediolateral | 50 | M | 14.8 | 1.1 | 0.000 | 14.3 | 1.4 | 0.000 | 12.2 | 1.3 | 0.000 | 11.3 | 1.2 | 0.000 | 12.2 | 1.3 | 0.000 |
| 50 | F | 13.5 | 0.9 | 12.5 | 1.2 | 11.0 | 0.8 | 10.2 | 0.8 | 11.4 | 1.0 | ||||||
| Midshaft anteroposterior | 50 | M | 8.60 | 0.90 | 0.000 | 8.66 | 0.70 | 0.000 | 8.93 | 0.86 | 0.000 | 7.38 | 0.88 | 0.000 | 6.76 | 0.89 | 0.001 |
| 50 | F | 7.49 | 0.81 | 7.59 | 0.63 | 7.90 | 0.77 | 6.46 | 0.817 | 6.17 | 0.79 | ||||||
| Midshaft mediolateral | 50 | M | 10.6 | 1.38 | 0.118 | 8.13 | 0.77 | 0.000 | 7.60 | 0.71 | 0.000 | 6.53 | 0.89 | 0.000 | 7.88 | 0.85 | 0.000 |
| 50 | F | 10.1 | 1.21 | 7.14 | 0.72 | 6.80 | 0.65 | 5.81 | 0.65 | 6.87 | 0.88 | ||||||
| Intramedullary diameter | 50 | M | 5.92 | 0.89 | 0.102 | 3.24 | 0.82 | 0.240 | 3.32 | 1.02 | 0.291 | 2.90 | 0.92 | 0.124 | 3.84 | 1.12 | 0.672 |
| 50 | F | 6.23 | 0.93 | 3.43 | 0.77 | 3.12 | 0.88 | 2.65 | 0.63 | 3.92 | 0.74 | ||||||
| Cortical thickness |
50 | M | 1.74 | 0.39 | 0.019 | 2.57 | 0.58 | 0.000 | 2.29 | 0.52 | 0.004 | 1.86 | 0.48 | 0.007 | 1.66 | 0.38 | 0.001 |
| 50 | F | 1.56 | 0.32 | 2.05 | 0.49 | 2.01 | 0.42 | 1.61 | 0.39 | 1.44 | 0.26 | ||||||
Note: The bold values signifies the intramedullary diameter measurements showed minimal differences between the sexes without any statistical significance.
Abbreviations: CT, computed tomography; F, female; M, male; MC, metacarpal.