**Core Concept:** Tibialis Posterior is a muscle in the human body that is responsible for dorsiflexion of the ankle joint and eversion of the foot. It is innervated by the tibial nerve and originates from the posterior surface of the tibia and fibula. The tarsal bones are the bones of the ankle joint, and their primary function is to provide stability to the ankle and foot.

**Why the Correct Answer is Right:** Tibialis Posterior is innervated by the tibial nerve, which branches off from the sciatic nerve. The tibial nerve supplies motor and sensory innervation to the muscles and skin of the lateral aspect of the lower leg and foot. Among the tarsal bones, only the navicular bone lies medial to the tibia, and thus, its innervation would be provided by the fibular nerve, not the tibial nerve.

**Why Each Wrong Option is Incorrect:**

A. The cuboid bone is located medial to the navicular bone, not lateral to it. Therefore, it receives innervation from the fibular nerve, not the tibial nerve.

B. The cuneiform bones are located medial to the cuboid bone, not lateral to it. Thus, they also receive innervation from the fibular nerve, not the tibial nerve.

C. The talus bone is located medial to the calcaneus bone, not lateral to it. The talus is innervated by the fibular nerve, not the tibial nerve.

D. The navicular bone is located lateral to the cuboid bone, making it the only tarsal bone that is innervated by the tibial nerve. The other tarsal bones receive innervation from the fibular nerve.

**Clinical Pearl:** Understanding the innervation patterns of the tibialis anterior and tibialis posterior muscles is essential for treating conditions like peripheral neuropathy or assessing the integrity of the tibial nerve. A deficit in the tibial nerve could lead to weakness or altered sensation in the lateral aspect of the foot and ankle.