Fig. 4From: Os peroneum imaging: normal appearance and pathological findingsNormal os peroneum – ultrasound. The transducer is moved forward along the PLT until the cuboid (cub). A small amount of synovial fluid can be visualized along the PLT (arrowhead). When present, the OP is visualized at this level as a hyperechoic structure showing posterior shadowing (arrow)Back to article page