Medical Definition of mandibular angle. : an angle formed by the junction at the gonion of the posterior border of the ramus and the inferior border of the body of the mandible.
When a fully grown nail is atrophied, it loses its shine; loses healthy look, starts to shrink in size, and may eventually falls away. This condition is called Onychatrophia and also known as atrophy. There are number of degrees of onychatrophia condition. An individual can have only one nail that has atrophied. However, this condition can never worsen because the condition was identified and treated as soon as possible.
Deformities are often considered together with dystrophies, but the two are slightly different; deformities are generally considered to be gross changes in nail shape, whereas dystrophies are changes in nail texture or composition (eg, onychomycosis). About 50% of nail dystrophies result from fungal infection. The remainder result from various causes, including trauma, congenital abnormalities, psoriasis, lichen planus, and occasionally cancer. Diagnosis may be obvious on examination, but often fungal scrapings and culture are done.