Morphometric Analysis of Facial Foramina in Maxillofacial Surgery
Summary
Morphometric analysis of facial foramina underpins safe and effective maxillofacial intervention by delineating the size, shape and spatial relationships of key bony openings. Variations in the infraorbital and accessory infraorbital foramina influence regional anaesthesia, fracture repair, orthognathic procedures and sinus surgery. High-resolution imaging modalities—particularly cone-beam computed tomography—have enabled three-dimensional mapping of foraminal positions relative to dental, orbital and nasal landmarks. Statistical shape modelling and population-specific datasets now inform customised surgical planning, reducing the risk of nerve injury and improving outcomes in trauma and reconstructive cases. Emerging protocols integrate morphometric indices with intraoperative navigation, fostering a global standard for identifying anatomical variants such as canal protrusions and accessory apertures.
Research from Nature Portfolio
Recent studies have quantified the prevalence and precise location of accessory infraorbital foramina relative to external landmarks. Detailed cadaveric dissections defined a method to locate accessory infraorbital foramina within an 8 mm radius of intersecting lines drawn from the lacrimal caruncle to the lateral canthus and subnasal point. This standardised reference improves the accuracy of infraorbital nerve blocks and minimises inadvertent injury to duplicated nerve branches. The work underscores the importance of anticipating anatomical variations in orbital and maxillary procedures and provides a reproducible framework for surgeons to enhance anaesthetic efficacy and safety.
Morphometric Analysis of Facial Foramina in Maxillofacial Surgery publication trend
The graph below shows the total number of articles in morphometric analysis of facial foramina in maxillofacial surgery across all publications each year (not limited to Nature Index journals).
Technical terms
Infraorbital foramen: An opening in the maxilla transmitting the infraorbital nerve and vessels.
Accessory infraorbital foramen: A secondary bony aperture conveying additional nerve branches, present in a subset of individuals.
Morphometry: The quantitative analysis of form, encompassing size and spatial relationships of anatomical structures.
Cone-beam computed tomography (CBCT): A three-dimensional imaging modality that provides high-resolution views of bony anatomy with lower radiation dose than conventional CT.
Infraorbital canal protrusion: A variant in which the infraorbital canal extends into the maxillary sinus cavity, classified by degree of protrusion.
References
- Location of the accessory infraorbital foramen with reference to external landmarks and its clinical implications. Scientific Reports (2020).
- Evaluation of Infraorbital Foramen Position Using Cone-Beam Computed Tomography in a Cohort of Central Gujarat, Indian Population. Cureus (2024).
- Cone beam computed tomographic evaluation of infraorbital canal protrusion into the maxillary sinus and its importance for endoscopic surgery. Brazilian Journal of Otorhinolaryngology (2022).
- Assessment of infraorbital foramen position using computed tomography (CT)-scan in a cohort of Cameroonian adults: landmarks in facial surgery and anesthesiology. Pan African Medical Journal (2023).
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