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Nail biology and nail science.
Int J Cosmet Sci. 2007 Aug; 29(4):241-75.IJ

Abstract

The nail plate is the permanent product of the nail matrix. Its normal appearance and growth depend on the integrity of several components: the surrounding tissues or perionychium and the bony phalanx that are contributing to the nail apparatus or nail unit. The nail is inserted proximally in an invagination practically parallel to the upper surface of the skin and laterally in the lateral nail grooves. This pocket-like invagination has a roof, the proximal nail fold and a floor, the matrix from which the nail is derived. The germinal matrix forms the bulk of the nail plate. The proximal element forms the superficial third of the nail whereas the distal element provides its inferior two-thirds. The ventral surface of the proximal nail fold adheres closely to the nail for a short distance and forms a gradually desquamating tissue, the cuticle, made of the stratum corneum of both the dorsal and the ventral side of the proximal nail fold. The cuticle seals and therefore protects the ungual cul-de-sac. The nail plate is bordered by the proximal nail fold which is continuous with the similarly structured lateral nail fold on each side. The nail bed extends from the lunula to the hyponychium. It presents with parallel longitudinal rete ridges. This area, by contrast to the matrix has a firm attachment to the nail plate and nail avulsion produces a denudation of the nail bed. Colourless, but translucent, the highly vascular connective tissue containing glomus organs transmits a pink colour through the nail. Among its multiple functions, the nail provides counterpressure to the pulp that is essential to the tactile sensation involving the fingers and to the prevention of the hypertrophy of the distal wall tissue, produced after nail loss of the great toe nail.

Authors+Show Affiliations

Bristol Dermatology Centre, Bristol Royal Infirmary, Bristol BS2 8HW, UK.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

18489354

Citation

de Berker, D A R., et al. "Nail Biology and Nail Science." International Journal of Cosmetic Science, vol. 29, no. 4, 2007, pp. 241-75.
de Berker DA, André J, Baran R. Nail biology and nail science. Int J Cosmet Sci. 2007;29(4):241-75.
de Berker, D. A., André, J., & Baran, R. (2007). Nail biology and nail science. International Journal of Cosmetic Science, 29(4), 241-75. https://doi.org/10.1111/j.1467-2494.2007.00372.x
de Berker DA, André J, Baran R. Nail Biology and Nail Science. Int J Cosmet Sci. 2007;29(4):241-75. PubMed PMID: 18489354.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Nail biology and nail science. AU - de Berker,D A R, AU - André,J, AU - Baran,R, PY - 2008/5/21/pubmed PY - 2008/5/21/medline PY - 2008/5/21/entrez SP - 241 EP - 75 JF - International journal of cosmetic science JO - Int J Cosmet Sci VL - 29 IS - 4 N2 - The nail plate is the permanent product of the nail matrix. Its normal appearance and growth depend on the integrity of several components: the surrounding tissues or perionychium and the bony phalanx that are contributing to the nail apparatus or nail unit. The nail is inserted proximally in an invagination practically parallel to the upper surface of the skin and laterally in the lateral nail grooves. This pocket-like invagination has a roof, the proximal nail fold and a floor, the matrix from which the nail is derived. The germinal matrix forms the bulk of the nail plate. The proximal element forms the superficial third of the nail whereas the distal element provides its inferior two-thirds. The ventral surface of the proximal nail fold adheres closely to the nail for a short distance and forms a gradually desquamating tissue, the cuticle, made of the stratum corneum of both the dorsal and the ventral side of the proximal nail fold. The cuticle seals and therefore protects the ungual cul-de-sac. The nail plate is bordered by the proximal nail fold which is continuous with the similarly structured lateral nail fold on each side. The nail bed extends from the lunula to the hyponychium. It presents with parallel longitudinal rete ridges. This area, by contrast to the matrix has a firm attachment to the nail plate and nail avulsion produces a denudation of the nail bed. Colourless, but translucent, the highly vascular connective tissue containing glomus organs transmits a pink colour through the nail. Among its multiple functions, the nail provides counterpressure to the pulp that is essential to the tactile sensation involving the fingers and to the prevention of the hypertrophy of the distal wall tissue, produced after nail loss of the great toe nail. SN - 1468-2494 UR - https://www.unboundmedicine.com/medline/citation/18489354/Nail_biology_and_nail_science_ L2 - https://doi.org/10.1111/j.1467-2494.2007.00372.x DB - PRIME DP - Unbound Medicine ER -
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