Table 2.

Depressions judged to be covered by cartilage on a water-selective cartilage MR sequence, presented by location and age group as percentage (standard deviation) of depressions

	Group I	Group II	Group III	Group IV	P-value*
	10–12 years (n = 18)	12–14 years (n = 16)	14–16 years (n = 19)	16–19 years (n = 21)
Total	0.52 (0.2)	0.46 (0.2)	0.38 (0.1)	0.32 (0.1)	0.001
Trapezium/oid	0.86 (0.4)	0.50 (0.5)	0.79 (0.3)	0.54 (0.5)	0.2
Scaphoid	0.25 (0.3)	0.34 (0.4)	0.44 (0.5)	0.50 (0.4)	0.3
Lunate	0.62 (0.4)	0.62 (0.2)	0.57 (0.3)	0.53 (0.4)	0.8
Capitate	0.42 (0.3)	0.33 (0.2)	0.35 (0.2)	0.15 (0.2)	0.004
Hamate	0.46 (0.5)	0.58 (0.4)	0.34 (0.4)	0.31 (0.4)	0.2
Triquetrum	0.81 (0.3)	0.82 (0.2)	0.52 (0.4)	0.52 (0.3)	0.01
Metacarpal	0.50 (0.4)	0.17 (0.2)	0.058 (0.1)	0.067 (0.1)	<0.000

*One-way between-group analysis of variance