Table 1.

Ultrasound findings for septic arthritis of the manubriosternal joint according to the course of the disease

	Disease course
	Early - acute	Subacute	Chronic residual
Effusion	+++	+++	-/+
Synovial thickening	+	+++	+/++
Active vascularity:
PD	-/+	++	-/+
SMI	++	+++	+/++
Bone erosions	-/+	++/+++	+++

+++ high; ++ medium; + mild; - not detected.

PD: Power Doppler; SMI: Superb microvascular imaging.