Tendon thickness
All parameters are measured on the left side of the Achilles tendon and then the right side of the Achilles tendon. Greyscale ultrasound is used initially to identify the Achilles tendon. Longitudinal scans are performed medially and laterally across the Achilles tendon until the scan plane shows the Achilles tendon clearly, and maximum tendon thickness is obtained. To minimise the anisotropic effect, the transducer is adjusted so that the ultrasound beam is perpendicular to the tendon fibres. A greyscale sonographic image is taken of the Achilles tendon. Tendon thickness is measured with grayscale and axial ultrasound at the region of interest [