Table 4

Correlation for ultrasonography, arthroscopic, histological and immunohistological findings between the three major compartments of the knee

Ultrasonography
	Synovitis grade (r)	Thickness (r)	Power Doppler grade (r)
Superior and lateral	0.62**	0.65***	0.15
Superior and medial	0.61*	0.48*	0.15
Medial and lateral	0.75***	0.73***	0.44*
Superior and overall	0.75***	0.87***	0.47*
Medial and overall	0.86***	0.87***	0.71***
Lateral and overall	0.82***	0.80***	0.64**