Table 2.

Intra-class correlation coefficient and 95 % confidence interval for the intra-rater reliability

	Proximal level	Mid level	Distal level
CT	0.987 (0.972–0.994)	0.988 (0.972–0.995)	0.990 (0.975–0.996)
Cartilaginous-MRI	0.997 (0.993–0.998)	0.998 (0.995–0.999)	0.997 (0.995–0.999)
Osseous-MRI	0.996 (0.993–0.998)	0.997 (0.994–0.999)	0.998 (0.996–0.999)

The table shows the lower values of the two raters