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The hyponychium (IPA: / ˌhaɪpoʊˈnɪkiəm /) [1][2] is the area of epithelium, particularly the thickened portion, underlying the free edge of the nail plate on the nail. Its proximal border is immediately distal to distal limit of nail bed—a.k.a. the onychodermal band (the line along the interface of the nail bed and the nail plate).
The nail matrix is the active tissue (or germinal matrix) that generates cells. The cells harden as they move outward from the nail root to the nail plate. [3] The nail matrix is also known as the matrix unguis, keratogenous membrane, or onychostroma. [4] It is the part of the nail bed that is beneath the nail and contains nerves, lymph and ...
Paronychia is an inflammation of the skin around the nail, often due to bacteria or fungi. Its sudden (acute) occurrence is usually due to the bacterium Staphylococcus aureus. Gradual (chronic) occurrences are typically caused by fungi, commonly Candida albicans. [2][3][4] Risk factors for paronychia include frequent hand washing and trauma to ...
Lunula (anatomy) The lunula is the white crescent-shaped area at the base of a nail. 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 ...
Unguis incarnatus or Ingrown toenail[1] An ingrown toenail on the large toe of the right foot. Specialty. Orthopedics. An ingrown nail, also known as onychocryptosis (from Greek: ὄνυξ (onyx) 'nail' and κρυπτός (kryptos) 'hidden') is a common form of nail disease. It is an often painful condition in which the nail grows so that it ...
Hook nail. Hook nail. Other names. Hook nail deformity. Specialty. Dermatology. Hook nail is a bowing of the nail bed due to a lack of support from the short bony phalanx (fingertip). [1]: 660.
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In human anatomy, the eponychium is the thickened layer of skin at the base of the fingernails and toenails. [1] It can also be called the medial or proximal nail fold. The eponychium differs from the cuticle; the eponychium comprises live skin cells whilst the cuticle is dead skin cells. Its function is to protect the area between the nail and ...