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Corrective Exercise Solutions: Foot and Ankle Pain FEET AND ANKLE MUSCLES TIBIALIS ANTERIOR Tibialis Anterior The Tibialis Anterior is located on the front of the lower leg and under the foot. MUSCLE SPECIFICS The tibialis anterior originates on the outside front of the lower leg near the top of the tibia. It travels down the leg, crosses over the ankle, and wraps around and under the inside border of the foot where it inserts in the midfoot and forefoot area. MUSCLE ACTION(S) The tibialis anterior inverts the foot and ankle (i.e., rolls it outward) and brings the toes and foot toward the shin (i.e., dorsiflexion). REAL LIFE MOVEMENTS In real life movements like lunging and squatting the tibialis anterior lengthens under load like a bungee cord to help hold up the medial longitudinal arch and control pronation of the foot and ankle. This stores energy in the muscle to enable the tibia to externally rotate as the foot comes out of pronation into supination. REAL LIFE MOVEMENT EXAMPLE The tibialis anterior helps control the speed with which the foot pronates and the tibia rotates internally. These movements happen in all weight bearing activities, especially those where the arches are not artificially supported (for example, when running barefoot). HELPFUL TIPS The tibialis anterior works in conjunction with the tibialis posterior to help control the degree to which the tibia internally rotates and the foot pronates. ©2016 The BioMechanics Method. All rights reserved.