The branches of the posterior tibial artery A. tibialis posterior, the posterior tibial artery, is a continuation of the popliteal artery. Going down the canalis cruropopliteus, it is on the border of the middle third of the leg with the bottom coming out from under the medial edge m. solei and becomes more superficial. In the lower third of the leg a. tibialis posterior lies between m. flexor digitorum longus and m. flexor hallucis longus, medial to Achilles tendon, covered here only with skin and fascial sheets. Walking around the back of the medial ankle, it is divided on the sole into two of its final branches: aa. plantares medialis et lateralis. Pulse a. tibialis posterior is felt by pressing it against the medial ankle.
The largest branch of the posterior tibial artery a. peronea (fibularis), peroneal artery, moving away from a. tibialis posterior in the upper third of the last, is sent to canalis musculoperoneus inferior and ends at the heel bone.
A. tibialis posterior and a. peronea on its way give branches to nearby bones, muscles, joints (posterior ankle branches) and skin.