Research Article
Femoral Head Coverage Assessment in Healthy Children Younger than 6 Years
Table 2
The comparison of FH coverage by different acetabular regions in children according to age and sex.
| Male | Female | Anterior coverage y.o | Anterior coverage |
| y.o. | 1 | 2 | 3 | 4 | 5 | 6 | y.o. | 1 | 2 | 3 | 4 | 5 | 6 | 1 | — | 0.019 | <0.001 | <0.001 | <0.001 | <0.001 | 1 | — | <0.001 | <0.001 | <0.001 | <0.001 | <0.001 | 2 | — | — | 0.053 | 0.234 | 0.004 | <0.001 | 2 | — | — | 0.0414 | 0.987 | 0.032 | <0.001 | 3 | — | — | — | 0.302 | 0.002 | 0.002 | 3 | — | — | — | 0.074 | 0.04 | 0.011 | 4 | — | — | — | — | <0.001 | 0.003 | 4 | — | — | — | — | 0.063 | 0.005 | 5 | — | — | — | — | — | 0.683 | 5 | — | — | — | — | — | 0.724 | 6 | — | — | — | — | — | — | 6 | — | — | — | — | — | — |
| Superior-anterior coverage | Superior-anterior coverage | y.o. | 1 | 2 | 3 | 4 | 5 | 6 | y.o. | 1 | 2 | 3 | 4 | 5 | 6 | 1 | — | 0.12 | <0.001 | <0.001 | <0.001 | <0.001 | 1 | — | 0.152 | 0.012 | <0.001 | <0.001 | <0.001 | 2 | — | — | 0.013 | 0.057 | 0.004 | <0.001 | 2 | — | — | 0.475 | 0.452 | 0.845 | 0.813 | 3 | — | — | — | 0.193 | 0.267 | 0.206 | 3 | — | — | — | 0.806 | 0.099 | 0.021 | 4 | — | — | — | — | 0.02 | <0.001 | 4 | — | — | — | — | 0.018 | 0.007 | 5 | — | — | — | — | — | 0.878 | 5 | — | — | — | — | —- | 0.365 | 6 | — | — | — | — | — | — | 6 | — | — | — | — | — | — |
| Superior-posterior coverage | Superior-posterior coverage | y.o. | 1 | 2 | 3 | 4 | 5 | 6 | y.o. | 1 | 2 | 3 | 4 | 5 | 6 | 1 | — | 0.027 | <0.001 | <0.001 | <0.001 | <0.001 | 1 | - | 0.028 | 0.004 | <0.001 | <0.001 | <0.001 | 2 | — | — | 0.008 | 0.042 | <0.001 | 0.002 | 2 | — | — | 0.518 | 0.175 | <0.001 | <0.001 | 3 | — | — | — | 0.156 | 0.036 | 0.011 | 3 | — | — | — | 0.397 | 0.002 | 0.004 | 4 | — | — | — | — | <0.001 | 0.003 | 4 | — | — | — | — | 0.004 | <0.001 | 5 | — | — | — | — | — | 0.955 | 5 | — | — | — | — | — | 0.341 | 6 | — | — | — | — | — | — | 6 | — | — | — | — | — | — |
| Posterior-superior coverage | Posterior-superior coverage | y.o. | 1 | 2 | 3 | 4 | 5 | 6 | y.o. | 1 | 2 | 3 | 4 | 5 | 6 | 1 | — | <0.001 | <0.001 | <0.001 | <0.001 | <0.001 | 1 | — | 0.016 | <0.001 | <0.001 | <0.001 | <0.001 | 2 | — | — | <0.001 | <0.001 | <0.001 | <0.001 | 2 | — | — | 0.013 | 0.004 | <0.001 | <0.001 | 3 | — | — | — | 0.45 | 0.068 | 0.003 | 3 | — | — | — | 0.901 | 0.018 | <0.001 | 4 | — | — | — | — | <0.001 | <0.001 | 4 | — | — | — | — | 0.003 | <0.001 | 5 | — | — | — | — | — | 0.3 | 5 | — | — | — | — | — | 0.784 | 6 | — | — | — | — | — | — | 6 | — | — | — | — | — | — |
| Posterior-inferior coverage | Posterior-inferior coverage | y.o. | 1 | 2 | 3 | 4 | 5 | 6 | y.o. | 1 | 2 | 3 | 4 | 5 | 6 | 1 | — | 0.015 | <0.001 | <0.001 | <0.001 | <0.001 | 1 | — | 0.049 | <0.001 | <0.001 | <0.001 | <0.001 | 2 | — | — | 0.005 | <0.001 | <0.001 | <0.001 | 2 | — | — | 0.013 | 0.03 | 0.005 | <0.001 | 3 | — | — | — | 0.273 | 0.068 | 0.003 | 3 | — | — | — | 1 | 0.516 | 0.002 | 4 | — | — | — | — | 0.08 | 0.005 | 4 | — | — | — | — | 0.296 | <0.001 | 5 | — | — | — | — | — | 0.249 | 5 | — | — | — | — | — | 0.051 | 6 | — | — | — | — | — | — | 6 | — | — | — | — | — | — |
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y.o.: years old.
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