POCUS IOTW: Knee Arthrocentesis

Posted on: April 23, 2018, by :

This is a boy with an atraumatic knee effusion. An US guided arthrocentesis was performed with the probe placed in the transverse position and the needle entering at the superolateral aspect to the patella. Notice the ring-down artifact that comes from metal. You can also see this from metallic foreign bodies.

“The information in these cases has been changed to protect patient identity and confidentiality. The images are only provided for educational purposes and members agree not to download them, share them, or otherwise use them for any other purpose.”

Joanna Cohen

Pediatric Emergency Medicine Attending/Director of Pediatric Ultrasound at Children's National Health System
Joanna is originally from NY where she attended medical school at Downstate in Brooklyn. She completed her pediatric residency at Johns Hopkins and made her way south to DC for PEM and ultrasound fellowships. She has remained in DC, making her home in Capitol Hill since 2005. She stays busy mostly attending youth soccer games with her three kids and running.
Joanna Cohen

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