The tibialis anterior is a prominent muscle located in the anterior compartment of the lower leg, just lateral to the tibia. . It originates from the lateral condyle and the upper two-thirds of the lateral surface of the tibia, as well as the interosseous membrane, and inserts into the medial cuneiform and the base of the first metatarsal bone of the foot.   🦵 Function The TA is primarily responsible for dorsiflexion of the ankle, lifting the foot upward, and inversion of the foot, turning th