Category: Orthopedics
Posted: 12/23/2023 by Brian Corwell, MD
(Updated: 10/9/2024)
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Estimating the size of knee effusions
While this size range is typically easily detectable on exam. This may not apply to patients who are either very muscular or obese.
If the detection of a small to moderate sized effusion would change patient management
Consider ultrasound:
As compared to MRI (sensitivity of 81.3 % and a specificity of 100 %)
Draghi F, Urciuoli L, Alessandrino F, Corti R, Scudeller L, Grassi R. Joint effusion of the knee: potentialities and limitations of ultrasonography. J Ultrasound. 2015 Sep 18;18(4):361-71.