Tibialis Anterior
Leg & Ankle
The muscle that keeps you from tripping — 'foot drop' happens when this muscle is paralyzed.
Function
Dorsiflexes ankle, inverts foot
Origin
Lateral condyle and upper 2/3 of lateral tibia, interosseous membrane
Insertion
Medial cuneiform and base of 1st metatarsal
Innervation
Deep fibular nerve (L4-L5)