Definition of Lunula
The lunula is the visible portion of the distal nail matrix that extends beyond the proximal nail fold. It is the half-moon-shaped area at the base of a fingernail or toenail). The word "lunula" comes from the Latin word for "moon".
Positive Aspects of Lunula
The lunula is an important part of the nail structure and has a primary structural role in defining the free edge of the distal nail plate. It is also an area of loose dermis with lesser developed collagen bundles).
Negative Aspects of Lunula
If the lunula is damaged, the nail will be permanently deformed). Alterations in the morphologic features or color of the lunula can be an indication of either a cutaneous or a systemic disorder. For example, the absence of the lunula may indicate an underlying health problem such as malnourishment, anemia, kidney failure, or heart disease).
Ingredients or Materials
The lunula is not made up of any specific ingredients or materials. It is the visible portion of the distal nail matrix that extends beyond the proximal nail fold.
Sources
- https://nailknowledge.org/nail-knowledge-base/the-lunula
- https://pubmed.ncbi.nlm.nih.gov/8647987/
- https://en.wikipedia.org/wiki/Lunula_(anatomy)
- https://www.dictionary.com/browse/lunula
