1. Man With Severe Shoulder Pain
Brita E. Zaia, MD, Philippa N. Soskin, MD, MPP 
Annals of Emergency Medicine 
Volume 63, Issue 5, (May 2014)
DOI: /j.annemergmed
Copyright © 2014 American College of Emergency Physicians Terms and Conditions

2. Figure 1
Ultrasonographic probe position on posterior left shoulder. The blue circle represents the direction of the probe indicator, and the black oval represents the position of the ultrasonographic probe footprint.
Annals of Emergency Medicine  , DOI: ( /j.annemergmed )
Copyright © 2014 American College of Emergency Physicians Terms and Conditions

3. Figure 2
Ultrasonographic image of the shoulder joint from a posterior approach. The yellow arrow points to a large shoulder joint effusion that appears black. The blue dot represents the screen indicator.
Annals of Emergency Medicine  , DOI: ( /j.annemergmed )
Copyright © 2014 American College of Emergency Physicians Terms and Conditions

4. Figure 3
Gross pus in syringe, aspirated from the left shoulder joint, using a posterior approach with ultrasonographic guidance.
Annals of Emergency Medicine  , DOI: ( /j.annemergmed )
Copyright © 2014 American College of Emergency Physicians Terms and Conditions

5. Figure 4
Ultrasonographic image of the shoulder joint effusion during the ultrasonographically guided arthrocentesis. The yellow arrow points to the needle tip in the joint effusion.
Annals of Emergency Medicine  , DOI: ( /j.annemergmed )
Copyright © 2014 American College of Emergency Physicians Terms and Conditions