hyponychium

Also found in: Encyclopedia.

hyponychium

[hi″po-nik´e-um]

the thickened epidermis beneath the free distal end of the nail of a digit. adj., adj hyponych´ial.

hy·po·nych·i·um

(hī'pō-nik'ē-ŭm), [TA]

The epithelium of the nail bed, particularly its proximal part in the region of the nailroot and lunula, forming the nail matrix.

[hypo- + G. onyx, nail]

hyponychium

/hy·po·nych·i·um/ (-nik´e-um) the thickened epidermis beneath the free distal end of the nail.hyponych´ial

hy·po·nych·i·um

(hī'pō-nik'ē-ŭm) [TA]

The epithelium of the nail bed, particularly its proximal part in the region of the nail root and lunula, forming the nail matrix.

[hypo- + G. onyx, nail]

hyponychium

area of skin immediately distal to distal limit of nail bed, i.e. underlying free margin of nail plate Figure 1

Figure 1: Nail and nail apparatus. This article was published in Neale's Disorders of the Foot, Lorimer, French, O'Donnell, Burrow, Wall, Copyright Elsevier, (2006).

hyponychium

the thickened epidermis beneath the free distal end of the claw of a digit.

Mentioned in ?

References in periodicals archive ?

Subungual hyperkeratosis is nail bed disease characterized by abnormal cornification of nail bed and hyponychium.

Nail changes in psoriasis - A profile

The lacquer was painted once daily on the entire nail plate of the target nail(s), along with approximately 5 mm of adjacent skin, the hyponychium, and the accessible ventral surface of the nail plate.

Antifungal drugs for onychomycosis: efficacy, safety, and mechanisms of action

The hyponychium is volar to the distal edge of the nail and consists of a keratinous plug.

Microsurgical management of acute traumatic injuries of the hand and fingers

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.

Unexplained changes in nail warrant biopsy

Another common but often-overlooked foot variation causes a shiny dermatosis at the hyponychium and onycholysis with hyperkeratosis on the great toenail.

If the shoe doesn't fit, look at the foot and the patient

Application instructions specify that the medication must completely cover the toenail folds and bed, the hyponychium, and the undersurface of the nail plate.

Efficacy and safety of onychomycosis treatments: an evidence-based overview

Another common but often-over-looked foot variation causes a shiny dermatosis at the hyponychium and onycholysis with hyperkeratosis on the great toenail.

If the shoe doesn't fit, focus on these failures in the foot

This is the periungual extension of pigmentation on the proximal or lateral nail fold or the hyponychium.

Nail streaks in subungual melanoma often missed

This is the periungual extension of pigmentation present on the proximal or lateral nail fold or the hyponychium.

Subungual melanoma in nail streaks often missed: if pigmentation of the nail plate can be seen, it might be possible to locate the tumor

In this type, dermatophytes reach the nail bed horny layer through the hyponychium.