Figure 24. Insertional tendinopathy. (a) Ultrasound showing widening of the tendon and a partial tear (arrow). (b) T1 weighted image of a different case. (c) Corresponding short tau inversion recovery image (note prominent posterosuperior corner of the calcaneus (arrow) which is impinging on the tendon) showing oedema in the calcaneus at the insertion and bursitis of the pre-Achilles (arrow) and retrocalcaneal (open arrow) bursae.