It refers to a tiny epithelium band that stretches onto the nail base from the posterior section of the nail. It is actually the terminal point of the proximal fold that rolls back to cast off an epidermal skin layer over a nail plate that has been formed freshly.
It is frequently and mistakenly referred to as “cuticle” or “proximal fold”.
It is the thick skin layer that surrounds the nails of the fingers and the toes. It gets itself attached to the nail plate closely. It moves with the plate as the latter grows.
It mainly acts as a protective barrier for the region between the nail and the epidermis. It resists the entry of bacteria and other microbes and prevents infection of the nail matrix. In hoofed animals, it functions as a short hoof in fetuses and newborns.
Get an idea about the location and appearance of this nail structure with the aid of these carefully chosen images.
Picture 1 – Eponychium
Picture 2 – Eponychium Image