Fig. 5. Sagittal (A) and transversal (B) magnetic resonance images as well as the digitised Achilles tendon boundaries (C). The sagittal images served to obtain the location of the most proximal aspect of the tuberositas calcanei and the most distal aspect of the soleus muscle. On each transversal image, the boundaries of the Achilles tendon were outlined manually. The length of the Achilles tendon was calculated as the curved path passing through the centroids of the cross sections (C).