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Use of sclerosing agents to treat tendinopathies. Longitudinal US scan of the Achilles tendon using a high-frequency transducer. Color Doppler is used to identify the area to be treated, which is the most highly vascularized zone (a). Longitudinal US scan of the Achilles tendon using a high-frequency linear transducer. Under US guidance, the needle is inserted in the previously identified area of the tendon (b)
