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The lunula (pl.: lunulae; from Latin 'little moon') is the crescent-shaped whitish area of the bed of a fingernail or toenail. In humans, it appears by week 14 [ 1 ] of gestation , and has a primary structural role in defining the free edge of the distal nail plate (the part of the nail that grows outward).
Seventy percent of hemodialysis patients and 56% of renal transplant patients have at least one type of nail abnormality. Absence of lunula, splinter hemorrhage, and half and half nails were significantly more common in hemodialysis patients, while leukonychia was significantly more common in transplant patients. [1]: 785 [3]: 659
Terry's nails is a physical condition in which a person's fingernails or toenails [1]: 659 appear white with a characteristic "ground glass" appearance without any lunula. [2]
The lunula can best be seen in the thumb and may not be visible in the little finger. The lunula appears white due to a reflection of light at the point where the nail matrix and nail bed meet. The nail bed is the skin beneath the nail plate. It is the area of the nail on which the nail plate rests.
Terry's nails: R. Terry: internal medicine: various including hepatic failure: white 'ground glass' nails;absence of lunula Terry Thomas sign: Terry-Thomas: Orthopaedics: Scapho-lunate dissociation: Atlas of Signs in Musculoskeletal Radiology: Gap between the scaphoid and lunate bones on AP wrist radiograph Thomas test: Hugh Owen Thomas ...
Extremely thin nails may not be the best for acrylics. 4. It might be hard to spot, but infection below the nail bed can become all too real. This also goes back to overused, worn out nail tools. ...
Alana Severs had ignored the line on her fingernail for years, covering it up with red nail varnish. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 ...
Congenital onychodysplasia of the index fingers is defined by the presence of the condition at birth, either unilateral or bilateral index finger involvement, variable distortion of the nail or lunula, and polyonychia, micronychia, anonychia, hemi-onychogryphosis, or malalignment.