Fig. 1

a Probe positioning for imaging the medial meniscus. The probe is placed over the medial meniscus with adjacent bony acoustic landmarks of the medial femoral condyle (black arrow) and tibia (white arrow). b Transverse (short axis) image of the medial meniscus demonstrating acoustic shadowing (star) from the Post-it® arrow placed over the medial meniscus, indicative of the intern’s localization being on the spot. Black and white arrows represent medial femoral condyle and tibia, respectively