Responsiveness of Quantitative Musculoskeletal Ultrasound Measures on the Healing of Achilles Tendon

This exercise will require the completion of slow active eccentric plantar flexion exercises with the forefoot positioned over the edge of a step. These exercises will be repeated twice daily (three sets of 15 repetitions with the knee in extension and three sets of 15 repetitions with the knee in flexion) during a three-month period. The amount of loading will be calibrated and progressed on a weekly basis by the physiotherapist according the participant's perceived effort and pain intensity.