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The Achilles tendon shows marked thickening, heterogeneity, fibrillation, with maximum thickening of 10 mm seen at 4 cm above its calcaneal insertion ( watershed zone). This finding is in keeping with chronic tendinosis. Also evident is partial discontinuity (2.5 cm above the calcaneal insertion), with some proximal retraction of the tendon consistent with a high grade partial tear involving approx. 80-90% of fibres. There is fluid in the preachilles bursa and subchondral marrow edema at the cortex of calcaneal Achilles tubercle suggesting reactive osteitis.
Mild edema is noted at anterior talofibular ligament.