In Plain English
The tibialis anterior is the long muscle that runs down the front of the shin. It lifts the front of the foot during walking and running, while also helping control how the foot contacts the ground with every step.
Technical Definition
The tibialis anterior is the largest muscle of the anterior compartment of the lower leg. It originates from the lateral tibia and inserts onto the medial cuneiform and first metatarsal, producing ankle dorsiflexion and assisting with foot inversion.
















