What is the nerve supply to the first web space of the foot?

The deep peroneal nerve is responsible for the sensory innervation of the first web space of the foot, which is the area between the great toe and the second toe. This nerve branches from the common peroneal nerve and descends anteriorly along the leg, supplying the muscles of the anterior compartment as well as providing cutaneous sensory branches.

As it approaches the foot, the deep peroneal nerve innervates the skin in the first web space, allowing for sensation in this region. Its role in this specific area is crucial for functions such as balance and proprioception, highlighting its importance in foot mechanics and overall stability during movement.

The other options involve different nerves that supply other regions of the foot or have different functions. For example, the superficial peroneal nerve primarily supplies the dorsum of the foot, while the tibial nerve innervates the plantar aspect (the sole) of the foot. The medial plantar nerve is responsible for the sensory innervation of a different part of the foot, specifically the medial side of the plantar surface, and does not cover the first web space. This makes the deep peroneal nerve the correct choice for the question regarding the first web space of the foot.