Table 1.

OMERACT combined scoring system for synovitis in children.

Grade	B Mode	Doppler
0	No signs of synovial effusion or synovial hypertrophy (i.e., no joint recess enlargement/capsular distension).	Absence of color/power Doppler signal within synovial hypertrophy with or without detection of normal physiological Doppler signals.
1 (mild)	Synovial effusion and/or synovial hypertrophy that leads to a mild change of joint recess appearance (i.e., mild joint recess enlargement/capsular distension).	Detection of up to 3 single Doppler signals within the area of synovial hypertrophy with or without normal physiological Doppler signals.
2 (moderate)	Synovial effusion and/or synovial hypertrophy that leads to a moderate change of joint recess appearance (i.e., moderate joint recess enlargement/capsular distension).	Detection of more than 3 single Doppler signals but less than 30% of the area of synovial hypertrophy with or without normal physiological Doppler signals.
3 (severe)	Synovial effusion and/or synovial hypertrophy that leads to a severe change of joint recess appearance (i.e., severe joint recess enlargement/capsular distension).	Detection of Doppler signals at more than 30% of area of synovial hypertrophy with or without normal physiological Doppler signals.