Figure 1. Ultrasound study of triceps surae injuries. A: fibrillar damage of the distal myotendinous junction of the medial gastrocnemius muscle, showing the hypoechogenic fibrillar defect (arrow) associated to loss of the usual fibrillar pattern and oedema of the adjacent muscle fibres (asterisk); B: distal myotendinous junction of the medial gastrocnemius in a normal triceps surae muscle.