Table 2.

Reproducibility of the AKSS scale - analysis of the inter and intra-observer correlation of each item of the two components (Clinical AKSS and Function AKSS).

	inter-observer ICC	Intra-observer ICC
Clinical AKSS
Pain	0.88 (p<0.001)	0.84 (p<0.001)
Range of Motion	0.92 (p<0.001)	0.88 (p<0.001)
Anteroposterior stability	0.20 (p<0.061)*	0.25 (p<0.025)*
Mediolateral stability	0.58 (p<0.001)	0.51 (p<0.001)
Flexion contracture	0.70 (p<0.001)	0.70 (p<0.001)
Extension deficit	0.56 (p<0.001)	0.53 (p<0.001)
Alignment	0.25 (p<0.024)*	0.21 (p<0.049)*
Functional AKSS
Distance walked	0.80 (p<0.001)	0.79 (p<0.001)
Stairs	0.72 (p<0.001)	0.71 (p<0.001)
Use of walking aids	0.83 (p<0.001)	0.71 (p<0.001)

CC -Intraclass correlation coefficient with confidence interval of 95%.