Nadia Ahmad, Ammara Ghafoor, Mamoona Shoukat, Nausheen Raza, Fariha Ahmad.
Morphometric Analysis of the Infraorbital Foramen in Dry Human Adult Skulls in a Local Population.
J Sharif Med Dent Coll Jan ;8(2):92-6.

Objective: To evaluate morphometric parameters and precise anatomical position of infraorbital foramina in reference to its surrounding important anatomical landmarks in adult human skulls. Methodology: A cross-sectional study was done on sixty adult dry skulls of unknown age and sex collected from the Anatomy Department of Sharif Medical and Dental College, Lahore. The skulls were assessed to determine the shape, vertical, and transverse diameter of infraorbital foramina, the distances between infraorbital foramina and the infraorbital margins, nasion, anterior nasal spine, and superior orbital foramen with the help of vernier calipers. Data was analyzed using Statistical Package for the Social Sciences (SPSS) version 26. Results: The mean vertical diameter of the infraorbital foramen (IOF) was 4.14+/-0.83 mm, the mean horizontal diameter of IOF was 4.88+/-1.11 mm, the mean distance of IOF from the infraorbital margin (IOM) was 6.32+/-1.29 mm, from nasion was 44.61+/-2.84 mm, from supraorbital foramen was 41.98+/-2.78 mm, and from the anterior nasal spine was 34.14+/-3.6 mm. One-way ANOVA showed a statistically significant difference (p-value=0.001) in the mean vertical diameter of the IOF on the right and left sides of the skull. The shape of IOF was predominantly oval. Conclusion: The mean vertical diameter of IOF on the left side was higher as compared to the right side of the skulls and the difference was statistically significant. The predominant shape of IOF was oval. The knowledge of the diameters and distance of IOF from various landmarks on the skull can aid the surgeons in careful preoperative assessment of patients who are candidates for maxillofacial surgeries and regional block anesthesia. Keywords: Human skull. Infraorbital foramen. Infraorbital nerve.

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