Anat Cell Biol.  2016 Mar;49(1):73-77. 10.5115/acb.2016.49.1.73.

Morphometric study on the infraorbital foramen in relation to sex and side of the cranium in northeastern Brazil

Affiliations
  • 1Federal University of Sergipe (UFS), Aracaju, Brazil. jaafelipe@infonet.com.br
  • 2Medical School of Tiradentes University (UNIT), Aracaju, Brazil.
  • 3Department of Morphology and the Postgraduate Physical Education and Applied Health Science Programs, Federal University of Sergipe (UFS), Aracaju, Brazil.

Abstract

Detailed knowledge of the possible anatomical and morphometric variations of the infraorbital foramen (IOF) is important for ensuring safe and successful regional anesthesia, and for avoiding iatrogenic nerve injuries during surgery on the middle third of the face. To conduct a morphometric study on the IOF, correlating this with sex and side of the cranium. Two hundred forty-two crania were used (148 male and 94 female). Measurements were made with the aid of digital calipers with precision to 0.01 mm. Presence of foramina and their multiplicity was also observed. The data were analyzed descriptively and analytically. Statistical significance was stipulated as 5% (P≤0.05). The IOF was found bilaterally in all the crania, and 26 of them presented multiplicity. The distance from the IOF to the anterior nasal spine was greater in males on both sides (P<0.001). Statistical differences between the sexes were also seen in relation to the following morphometric variables: height of the left IOF (P=0.007), width of the right IOF (P=0.004), and width of the left IOF (P=0.008), and the measurements were also larger among males. The IOF was present in all the crania and on both sides. It was morphometrically larger in males, on both sides.

Keyword

Maxilla; Sex characteristics; Humans; Anatomy; Cephalometry; Orbit/anatomy and histology; Cadaver; Infraorbital foramen

MeSH Terms

Anesthesia, Conduction
Brazil*
Cadaver
Cephalometry
Humans
Male
Maxilla
Sex Characteristics
Skull*
Spine

Figure

  • Fig. 1 (A, B) Measurements of the infraorbital foramen. H, height of infraorbital foramen; W, width of infraorbital foramen; DIOFLB, distance from infraorbital foramen to lower border of the orbit; DIOFANS, distance from infraorbital foramen to anterior nasal spine.


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