Ultrasound presentation of the popliteofibular ligament (PFL) with its junction to the popliteus tendon (Pop, marked with dashed line) observed in a cadaveric specimen. FH fibular head, SC subcutaneous adipose tissue. White arrows: cortex of the tibia. The US probe is positioned in the oblique longitudinal orientation (in the anatomical long axis of the PFL—superiorly the transducer was medial and inferiorly the transducer was lateral). The proximal direction is to the left and the distal is to the right