Answer :
The tibialis anterior is the muscle that drives the second ankle rocker's forward tibial advancement. It is in charge of the ankle's inversion and the foot's dorsiflexion, both of which are necessary for the propulsion phase of gait.
The tibialis anterior is a muscle located in the anterior compartment of the leg. It arises from the lateral condyle and the upper two-thirds of the lateral surface of the tibia and inserts into the medial cuneiform and first metatarsal bones of the foot.
The muscle is innervated by the deep peroneal nerve and is responsible for dorsiflexion of the foot and inversion of the ankle. During the stance phase of gait, the tibialis anterior plays an important role in the forward tibial progression of the second ankle rocker.
As the foot strikes the ground, the tibialis anterior contracts to dorsiflex the foot, which allows the ankle to clear the ground and the leg to move forward. The muscle also works with the other muscles in the lower leg to control the rate of pronation and supination of the foot.
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