Mean thickness of the dorsal RC and MC synovial recesses in 116 healthy children (59 girls) aged 6–16 years, by age groups
| 6–7 years (n=20) | 8–9 years (n=23) | 10–11 years (n=24) | 12–13 years (n=18) | 14–16 years (n=31) | P value (ANOVA) | |
| RC recess, mean in mm (SD) | 0.2 (0.4) | 0.2 (0.4) | 0.2 (0.3) | 0.7 (0.8) | 0.8 (0.3) | <0.001* |
| MC recess, mean in mm (SD) | 0.2 (0.5) | 0.4 (0.7) | 0.3 (0.5) | 0.5 (0.6) | 0.8 (0.6) | 0.001 |
*Test of homogeneity of variances=0.01.
ANOVA, analysis of variance; MC, midcarpal; RC, radiocarpal.