Sonnex T S, Griffiths W A, Nicol W J
Department of Dermatology, St John's Dermatology Centre, London, England.
Semin Dermatol. 1991 Mar;10(1):12-6.
The nomenclature relating to structures at the distal part of the nail is confusing. A distal yellow line traversing the nail, described by Pinkus, has been relatively ignored in the literature and remains unnamed. Clinical and histological studies presented in this article show that this band is present in more than 90% of normal adult fingernails and represents the most proximal point of attachment of the fingertip stratum corneum to the nail plate. Therefore, it should be referred to as the onychocorneal band or junction. This region has distinctive histological features and is the first major barrier to material passing proximally beneath the nail plate. It is possible that abnormalities of this structure may result in onycholysis, pachyonychia congenita, and pterygium inversum unguis.
与指甲远端结构相关的命名法令人困惑。平库斯描述的一条横贯指甲的远端黄线在文献中相对被忽视，且仍未命名。本文所呈现的临床和组织学研究表明，这条带存在于超过90%的正常成人指甲中，代表指尖角质层与指甲板附着的最近端点。因此，它应被称为甲角膜带或甲角膜交界。该区域具有独特的组织学特征，是物质在指甲板下方近端通过的首个主要屏障。这种结构的异常可能导致甲剥离、先天性厚甲症和逆剥性甲胬肉。
