Avulsion of the common hamstring origin, involving semimembranosus, semitendinosus and the long head of biceps femoris with fluid in the defect, which measures 2.9 cm.
Intermediate signal and thickening of the redundant semimembranosus and biceps femoris fibres, over a length of 3.3 cm.
Fascial plane oedema tracks caudally. Minor perineural oedema in relation to the sciatic nerve.
Fatty atrophy of the proximal semitendinosus muscle belly in keeping with a prior injury.