Table 2.

Intraobserver Reliability for the Measurement of the Tibial Slope on Lateral Radiograph and MRI Scan ^a

	MTPS			LTPS
	ICC	95% CI	P Value	ICC	95% CI	P Value
Radiograph	0.96	0.84-0.98	<.001	0.97	0.88-0.99	<.001
MRI (subchondral bone)	0.89	0.58-0.97	.002	0.81	0.30-0.95	.009
MRI (cartilage)	0.84	0.41-0.96	.005	0.93	0.02-0.96	.001

^a ICC, intraclass correlation coefficient; LTPS, lateral tibial plateau slope; MRI, magnetic resonance imaging; MTPS, medial tibial plateau slope.