(2024). The Weight of the Head and Skull, as well as The Centre of Gravity Can Be Affected by The Paranasal Sinuses. test, 95(1), 2297-2302. doi: 10.21608/ejhm.2024.362694
. "The Weight of the Head and Skull, as well as The Centre of Gravity Can Be Affected by The Paranasal Sinuses". test, 95, 1, 2024, 2297-2302. doi: 10.21608/ejhm.2024.362694
(2024). 'The Weight of the Head and Skull, as well as The Centre of Gravity Can Be Affected by The Paranasal Sinuses', test, 95(1), pp. 2297-2302. doi: 10.21608/ejhm.2024.362694
The Weight of the Head and Skull, as well as The Centre of Gravity Can Be Affected by The Paranasal Sinuses. test, 2024; 95(1): 2297-2302. doi: 10.21608/ejhm.2024.362694

The Weight of the Head and Skull, as well as The Centre of Gravity Can Be Affected by The Paranasal Sinuses

The Egyptian Journal of Hospital Medicine
Article 155, Volume 95, Issue 1, April 2024, Pages 2297-2302    PDF (381.14 K)
Document Type: Original Article
DOI: 10.21608/ejhm.2024.362694
Abstract
Background: The paranasal sinuses are air-filled cavities that potentially influence the weight and center of gravity (CG) of the head and skull. Their anatomical and physiological roles warrant investigation regarding their impact on cranial biomechanics. Objective: to determine the effect of the paranasal sinuses on the mass and CG of the head and skull using volumetric and mass analyses from CT scans. Patients and Methods: a retrospective study utilizing medical records and CT scans from 130 patients (69 males, 61 females; aged 18-75) treated at Benha Medical School between January 2016 and June 2019. Participants' CT scans were analyzed using Amira software to create 3D reconstructions and simulate the presence and absence of pneumatic sinuses. Four groups were evaluated: natural pneumatic sinuses and sinuses filled with bone material for both the skull and entire head. Volumes were converted to mass estimates using established density values, and the CG was calculated for each configuration. Results: The mean dimensions of head and skull, along with mass and volume, revealed no significant differences when sinuses were filled with bone. The average head mass was 4.495 kg (SD 0.0736 kg), with no notable changes in CG coordinates (X: -0.370 cm ±0.08, Y: 0.094 cm ±0.13, Z: 2.66 cm ±0.79) between groups. The paranasal sinuses did not significantly alter the mass or CG of the head and skull.
Conclusion: The paranasal sinuses have a negligible impact on the mass and CG of the head and skull, suggesting their role in cranial biomechanics is minimal.
 
Keywords
Paranasal sinuses; Head mass; Center of gravity; CT scan; Cranial biomechanics
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