The ultrasound image above shows the pes anserine bursa, which is enlarged with fluid suggesting bursitis.
*: pes anserine bursa (bursitis); arrows: pes anserine tendons; arrowheads: distal tibial collateral ligament (long-axis). Left of the screen: proximal; right of the screen: distal.
Courtesy of Mederic Hall, MD and Sathish Rajasekaran, MD.
