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The posterior tibial artery is smaller in size in many people an in those persons it is replaced by the large peroneal artery which continues till the sole of the foot and supplies structure all along its way. Anastomosis: anastomosis around the ankle, anastomosis around the knee.Fasciae: Superficial fascia of the back of the leg, interosseous membrane.Deep muscles group: flexor Digitorum Longus, flexor halluces Longus and tibialis posterior.Superficial muscles group: gastrocnemius, soleus and plantaris.It supplies blood to the structures present in the posterior compartment of the leg which include: At the ankle, it is placed directly on the capsule of the ankle joint between the flexor digitorum longus and the flexor halluces longus muscles. In the lower one-third of the leg, it lies on the flexor digitorum longus and on the tibia. In the upper two-thirds of the leg, it runs along the tibialis posterior. At the ankle, it runs beneath the flexor retinaculum, and the abductor halluces muscles.ĭeep relations of posterior tibial artery: In the lower part of the leg, it runs parallel to and anterior to the medial side of the Tendocalcaneus. In the upper two-thirds of the leg, it lies deep to the gastrocnemius, the soleus, and the superficial transverse fascial septum. Superficial relations of posterior tibial artery: Inferiorly, the tendons of the flexor halluces longus and flexor digitorum longus muscles are present on its sides. The tendons of tibioperoneal trunk and flexor digitorum longus muscle separate the artery from the medial malleolus. The artery courses along the posterior surface of the medial malleolus. Relations of Posterior Tibial arteryĭuring its decent, the tibial nerve and veins of the posterior compartment accompany the posterior tibial artery. It ends the route beneath the flexor retinaculum, a thin tendinous sheath, and the origin of the abductor halluces muscles by supplying two terminal branches, the lateral and medial plantar arteries. Now that the artery has entered the human leg, it traverses a path directed downwards and medially and reaches the ankle, between the medial tubercle of the calcaneum and the medial malleolus. The posterior tibial artery gives off the fibular artery which is a larger branch. It arises from the popliteal artery which is the parent artery as the former passes beneath the soleus and gastrocnemius muscles. It starts its course between the bones, tibia, and fibula, at the distal end of the popliteus. It gives off eight branches two of which are terminal branches called the medial and lateral plantar arteries. It contributes towards supplying blood to the posterior compartment of the human leg along with the popliteal artery and to the foot by its terminal branches.
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The posterior tibial artery is a vessel of the human leg and is a large and more terminal branch of the popliteal artery.