Positive
Substantial quantity of anechoic fluid (in comparison to contralateral side)
Negative
Trace or no effusion
Substantial quantity of anechoic fluid (in comparison to contralateral side)
Trace or no effusion
Compare contralateral<unk>
Ultrasound: Joint
Ultrasound: Bone
Arthrocentesis: finger
Ultrasound: Signs
Arthrocentesis: toe
Nerve Block: Foot
Arthrocentesis: knee
Arthrocentesis: elbow