nail matrix

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Related to nail matrix: nail root


 [ma´triks] (pl. ma´trices) (L.)
1. the intercellular substance of a tissue, as bone matrix, or the tissue from which a structure develops, as hair or nail matrix.
2. a metal or plastic band used to provide proper form to a dental restoration, such as amalgam in a prepared cavity.
Matrices: A, Simple metal strip with a wooden wedge. B, Circumferential band of copper to encase the entire crown. From Baum et al., 1995.
bone matrix the intercellular substance of bone, consisting of collagenous fibers, ground substance, and inorganic salts.
cartilage matrix the intercellular substance of cartilage consisting of cells and extracellular fibers embedded in an amorphous ground substance.
nail matrix (matrix un´guis) the nail bed.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

nail ma·trix

the area of the corium on which the nail rests; it is extremely sensitive and presents numerous longitudinal ridges on its surface. According to some anatomists, the nail bed is the portion covered by the body of the nail, the nail bed being only the part on which the root of the nail rests.
Farlex Partner Medical Dictionary © Farlex 2012

nail bed

(nāl bed)
The area of the corium on which the nail rests; it is extremely sensitive and presents numerous longitudinal ridges on its surface.
Synonym(s): keratogenous membrane (2) , matrix unguis.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
Caption: Figure 4: (a) A patient with nail matrix involvement (pitting); (b) patient with nail bed involvement (onycholysis); TI: triamcinolone iontophoresis; CB: calcipotriol/betamethasone dipropionate.
In our report we describe a case of chronically inflamed ingrown nail left untreated for three years in which skin bridging and epithelialization occurred in midline secondary to soft tissue hypertrophy of the lateral nail matrixes.
Achieving a definitive diagnosis can be tricky because it requires a biopsy of the nail matrix, which must be accomplished by removing a piece of the third phalanx - the last part of the toe.
The posterior nail fold and the nail matrix were cauterized completely with an 88% phenol-immersed cotton-tipped applicator for five minutes.
If the entire plate has been affected, the fungus has probably invaded the nail bed; this may have damaged the nail matrix, resulting in permanently dystrophic nails.
BEST TIP: Protect the nail matrix (the area that produces the nail) from sports shoe trauma by wearing shoes slightly large and keeping nails trimmed short.
The specialized delivery system penetrates to the nail matrix where new nail cell formation occurs, providing the opportunity to kill the germs that cause infection, according to the spokeswoman.
The nail matrix which is directly under your cuticle, is full of blood cells and growing nail material.
Involvement of the nail bed and/or nail matrix by abnormal clonal keratinocytes causes onychodystrophy (2).
The histopathological changes presented in the nail matrix and in the nail bed showed a crater-like area with irregulars cleft, acantholysis, and dyskeratotic cells [9].
Nail matrix biopsy was taken by double punch technique.