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Microcomputed tomography of the stapes: Wide-ranging dimensions
Jason Patrick Calligas1, Norman Wendell Todd
1Emory Children's Center, 2015 Uppergate Dr., NE, Atlanta, GA 30329, USA.
Ear, Nose, & Throat Journal
|June 26, 2018
Summary
Human stapes dimensions are generally bilaterally symmetrical. However, stapes size showed no correlation with mastoid pneumatization, a childhood otitis media indicator.
Area of Science:
- Anatomy
- Otology
- Medical Imaging
Background:
- Human stapes dimensions vary, with the footplate fitting the oval window.
- High-resolution imaging studies of stapes dimensions are limited.
- Bilateral symmetry and correlation with mastoid pneumatization remain unaddressed.
Purpose of the Study:
- To investigate stapes dimensions using high-resolution imaging.
- To assess the bilateral symmetry of stapes dimensions.
- To determine if stapes size correlates with mastoid pneumatization.
Main Methods:
- Microcomputed tomography of 10 temporal bone specimens from cadaver crania.
- 3D stapes models created using ImageJ software.
- Analysis of specimens with largest and smallest mastoid pneumatization.
Main Results:
- Mean stapes height: 3.43 mm; mean footplate length: 2.71 mm; mean footplate width: 1.23 mm.
- Stapes dimensions demonstrated general bilateral symmetry.
- No correlation found between stapes dimensions and mastoid pneumatization.
- Footplate width distribution may be bimodal, with men having wider footplates.
Conclusions:
- Stapes dimensions are generally bilaterally symmetrical.
- No association exists between stapes size and mastoid pneumatization.
- Footplate width may differ between sexes, warranting further investigation.
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