The medial inferior genicular artery is a blood vessel which lies in the posterior aspect of human knee, right under the medial head of the gastrocnemius muscle. It originates from the medial side of the popliteal artery. Then it runs medially and slightly downwards, curving around the medial periphery of the knee-joint under the medial ligament of knee.
Along its course, the medial inferior genicular gives off secondary branches which anastomose with branches of the medial superior genicular and descending genicular artery, thus being part of the knee vascular network. It supplies the head and tendon of the gastrocnemius, proximal end of tibia, and ligament of knee.
Below, the popliteal artery with its branches, which include the medial inferior genicular artery.
