The function within your Achilles tendon is to help in bending your foot downwards for the ankle, as you do when you are pointing your toes. (This motion is called plantar flexion.) Botulinum toxin (as in Botox and other brands). This cure uses a protein made by the bacterium Clostridium https://orthotics16037.bmswiki.com/5345846/facts_about_achilles_tendonitis_revealed