What is the specific insertion site for the tibialis anterior?

The tibialis anterior is a muscle located in the anterior compartment of the leg, primarily responsible for dorsiflexion of the foot and inversion of the ankle. Its specific insertion occurs at the medial cuneiform and the base of the first metatarsal. This positioning allows the muscle to effectively contribute to the movement of the foot and stabilize the arch during ambulation.

The attachment at the medial cuneiform is particularly important, as it plays a key role in the elevation of the foot's medial side, facilitating activities such as walking and running. By anchoring at both the medial cuneiform and the base of the first metatarsal, the tibialis anterior not only assists with foot movement but also helps maintain postural stability while on the foot.

The other choices refer to sites that do not align with the anatomical characteristics of the tibialis anterior. The lateral surface of the 5th metatarsal pertains to other muscles that contribute to eversion and stabilization of the lateral aspect of the foot. The base of the distal phalanx of the great toe is related to flexor muscles and not the tibialis anterior. The proximal third of the fibula relates to muscular origins but does not serve as an insertion point for