International Journal of Morphology
versión On-line ISSN 0717-9502
FARAH, Ghaus y FARUQI, N. A.. Morphometric Analysis of Infraorbital Foramen in Human Foetuses. Int. J. Morphol. [online]. 2007, vol.25, n.2, pp. 301-304. ISSN 0717-9502. doi: 10.4067/S0717-95022007000200009.
A detailed knowledge of the anatomic morphometry of infraorbital groove, canal and foramen was necessary for a surgeon while performing maxillofacial surgery and regional block anaesthesia. Modern surgical procedures as well as anaesthesia require more precise understanding of the surrounding anatomy. The aim of the study was to establish morphometrically the infraorbital foramen size and location in human foetuses, the area where this information was scanty. Sixty maxillae were dissected out from thirty human foetuses. The latter were divided into five groups on the basis of age i.e. groups I(<17 weeks IUL),II (17-20 weeks IUL), III (21-25 weeks IUL),IV (26-30 weeks IUL) and V (>30 weeks IUL). Four parameters including transverse diameter and vertical diameter of infraorbital foramen and its distances from the infraorbital margin and nasal notch, were considered. Foramen was nearly circular in group I foetuses (transverse as well as vertical diameter being 0.6 mm approximately) but in subsequent groups,the foramen is transversely oval due to faster increase in transverse diameter (1.93 mm in group V whereas the vertical diameter in group V remained 1.21 mm only). Downward displacement was found to be relatively more than the lateral displacement. Third group showed maximum increase in all the four parameters. Some association between diameter of infraorbital foramen and foetal age was established on the basis of correlation coefficient analysis
Palabras clave : Infraorbital foramen; Morphometry; Human foetuses; Maxilla; Development.