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Injury to the proximal myotendinous junction of biceps femoris with hyperintensity extending for a craniocaudal length of approximately 16 cm involving more than 50% cross-sectional diameter of the muscle belly. Fibre disruption length of approximately 9 cm with involvement of the central tendon slip. There is extension to the fascia with myofascial fluid both posterior and anterior, notably with fluid tracking around the sciatic nerve. There is no extension into the proximal free tendon nor any involvement of the distal myotendinous junction or free tendon.