Fig. 7.

Bone hyperplasia. Symptomatic hyperplastic peroneal tubercle. a, b Coronal oblique US (a) and PD fat Sat coronal MR image b in a patient with symptomatic hyperplastic peroneal tubercle. a US shows a hyperplastic “beak-like” peroneal tubercle (arrow). The tubercle impinges on the peroneus longus tendon that appears irregular (arrowheads). The peroneus brevis tendon (PB) is normal. b MRI confirms the US appearance. Note oedema of the tubercle and longitudinal split of the peroneus longus tendon (arrowheads) associated with tenosynovitis