International Journal of Morphology
versión On-line ISSN 0717-9502
CASTILHO, Marco Antonio Santána; ODA, Juliano Yasuo y SANTANA, Débora de Mello Gonçales. Metopism in Adult Skulls from Southern Brazil . Int. J. Morphol. [online]. 2006, vol.24, n.1, pp. 61-66. ISSN 0717-9502. doi: 10.4067/S0717-95022006000100012.
The metopic suture is found between the frontal bone tubers, there being divergences concerning the precise time of its closure, varying from the first to tenth year of life, and it can persist until adult age (metopism). A study was conducted in 71 dry skulls of adult Brazilian subjects of both sexes (43 males and 28 females), with ages ranging from twenty five to eighty years from the bone collection of the Laboratory of Human Anatomy of the Paranaense University UNIPAR, Brazil. It was observed the occurrence of metopism in 7.04% (05/71) of the studied skulls, of which 80% (4/5) were female and only 20% (1/5) male. The incomplete metopic suture was found in 32.39% (23/71), with higher frequency in female skulls, 60.86% (14/23), when compared to the male ones, that reached 31.13% (9/23). Sutures showed variations of morphology, the linear type being the most frequent, with 69.56% (16/23). Different incidences of metopic suture were found in the different antrophometric types of skulls. Incomplete metopic sutures were predominant in the brachycranics, while complete metopic sutures had the same incidence in mesocranics, 40% (2/5) and dolichocranics, 40% (2/5)
Palabras clave : Human Anatomy; Metopic suture; Metopism.