Table 4.

Cohen's kappa values for interobserver reliability.

Parameter	CTA	MRI
	Interobserver agreement ± SEM	Interobserver agreement ± SEM
Full thickness cartilage defect
Presence	0.72 ± 0.05	0.55 ± 0.07
Size	0.47 ± 0.05	0.55 ± 0.04
Any cartilage defect
Presence	0.82 ± 0.05	0.55 ± 0.06
Size	0.48 ± 0.05	0.50 ± 0.04
Defect of the subchondral bone
Presence	0.70 ± 0.06	0.78 ± 0.04
Depth	0.60 ± 0.05	0.75 ± 0.04
Size	0.48 ± 0.04	0.63 ± 0.04