Table 2.

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.