The purpose of one's Achilles tendon is that will help in bending your foot downwards at the ankle, as you need to do if you're pointing your toes. (This movement is referred to as plantar flexion.) From Mayo Clinic to the inbox Sign up for free and keep up-to-date on https://specialistsphere.com/foot-and-ankle-pain-explained-common-conditions-diagnosis-and-effective-treatments/