Figure 4

Graph (a) shows the cross-sectional area (CSA) of the Achilles tendon (AT) at calcaneal insertion in relation to the CSA of plantar fascia’s (PF) insertional length (r = 0.80, p ≤ 0.001). Graph (b) shows the CSA of AT’s insertional length in relation to CSA of PF’s insertional length (r = 0.84, p ≤ 0.001).