The length of a nail was taken to be the greatest distance from the proximal nail fold to the hyponychium
as determined clinically by the distal pink color of the nail plate; the width was in turn measured at the midpoint of the measured length.
is volar to the distal edge of the nail and consists of a keratinous plug.
For large lesions located in the lateral third of the nail, she added, "a longitudinal nail biopsy yields the best information because it samples the nail matrix, nail bed, nail fold, and hyponychium
Another common but often-over-looked foot variation causes a shiny dermatosis at the hyponychium
and onycholysis with hyperkeratosis on the great toenail.