Anatomy & DisordersQuestion 67 of 100

A client asks you to dig deep underneath the free edge of her nails with a metal tool so they will be really clean. Why should you refuse?

a.Because the free edge itself contains nerve endings and will bleed
b.Because you would break the hyponychium, the skin seal under the free edge that keeps bacteria out
c.Because the matrix is located directly under the free edge
d.Because metal tools may never touch a natural nail plate

Explanation

The hyponychium is the living skin that seals the space between the free edge and the fingertip, and it is a barrier against bacteria and fungus. Digging under the free edge tears that seal and creates a direct entry point for infection, so clean gently and only at the surface. The free edge is dead keratin with no nerves, the matrix is at the base of the nail rather than the tip, and disinfected metal implements are allowed when used correctly.

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