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Inferior Knee

September 2023

Author: R. Conner Dixon, MD, CAQ-SM
Peer-Reviewer: Justine Ko, MD, CAQ-SM
Final Editor: Will Denq, MD, CAQ-SM

This image was captured by placing a linear probe in a cranial-caudal plane in the anterior aspect of the knee below the patella.

Image 1: Case courtesy of Maulik S Patel,, rID: 86122, author’s own annotations


Image 2: Demonstration of the ultrasound technique for this case. Author's own image.


A patient comes in complaining of knee pain after stepping off a rock while hiking. She felt a pop and immediately fell, unable to put any weight on that leg. You obtain the following ultrasound image.

Case courtesy of Craig Hacking,, rID: 64416