Fig. 10

Longitudinal parasagittal image of the right hind lateral sesamoid. Moderate undulation of the proximal margin of the sesamoid bone, and a well-defined hypoechoic defect (arrow) at the plantar margin. There is corresponding hypoechoic material at the insertion of the lateral branch of the tendon of the third interosseous medius muscle (suspensory ligament) (dashed arrow). Marker is to proximal