nasionami

Nasionami is the plural form of the anatomical term nasion in Polish. In human anatomy, a nasion is a single midline craniofacial landmark, while nasionami refers to nasion points across multiple skulls or specimens. There is typically one nasion per skull, located at the intersection of the frontal bone and the nasal bones at the frontonasal suture.

Localization and definition are central to its use. The nasion is commonly described as the most anterior point of the frontonasal suture and serves as a reference landmark for midline measurements of the craniofacial skeleton. In radiographic and cephalometric analysis, the nasion anchors important measurements and angular relationships used in orthodontics, maxillofacial surgery, and anthropometric studies.

Applications and significance. Nasion serves as a standard reference point in cephalometry, contributing to calculations such as maxillofacial relationships and facial height. It is involved in indices and angles that describe the position of the maxilla and mandible relative to the cranial base. Imaging modality and growth can introduce small positional variations, and reproducibility is a consideration in longitudinal studies.

Variability and context. While the concept of nasion remains consistent, its precise localization can vary slightly between individuals, age groups, and imaging techniques. When researchers refer to nasionami, they are usually discussing nasion points across a set of specimens rather than introducing multiple distinct landmarks on a single skull.

See also: nasion, cephalometrics, craniofacial anthropology.