What is the primary role of nail walls?

The primary role of nail walls is to protect the nail plate. These walls, which are part of the skin surrounding the nail, create a barrier between the nail and external elements such as dirt, bacteria, and physical trauma. By serving as this protective layer, nail walls help maintain the integrity of the nail plate.

While nourishment is important for nail growth and health, it primarily comes from the nail matrix rather than the nail walls. The aesthetic appeal of nails can indeed be influenced by the condition of the nail walls, but their primary function is not for beauty but protection. Preventing infections is a secondary benefit of having healthy and intact nail walls; the main role remains their protective function.