Related Experiment Video
Updated: Jan 24, 2026

Facial Nerve Axotomy in Mice: A Model to Study Motoneuron Response to Injury
Published on: February 23, 2015
Is there a relationship between mastoid pneumatisation and facial canal dimensions?
M Inal1, N Bayar Muluk2, N Asal1
1Radiology Department, Faculty of Medicine, Kirikkale University, Turkey.
Objective:
To evaluate mastoid pneumatisation and facial canal dimensions.
Method:
In this retrospective study, 169 multidetector computed tomography scans of temporal bone were reviewed. Facial canal dimensions were evaluated at the labyrinthine, tympanic and mastoid segments using axial and coronal multidetector computed tomography scans of temporal bone. Mastoid pneumatisation and facial canal dehiscence were evaluated. Facial canal dehiscence was measured if it was found to be present.
Results:
This study showed that facial canal dimensions decreased in pneumatised mastoids. Facial canal dimensions in females were smaller than in males. Facial canal dehiscence was detected in 5.9 per cent and 6.5 per cent of the patients on the right and left sides, respectively. No correlations were found between facial canal dehiscence and mastoid pneumatisation. The length of dehiscence was 1.92 ± 0.44 mm (range, 0.86-2.51 mm) on the left side. In older subjects, left facial canal dehiscence was detected more, and the length of the dehiscence increased.
Conclusion:
This study concluded that during surgery, facial canal dehiscence should be kept in mind in order to avoid complications.
Related Concept Videos
Relationship Formation
Ending Relationships
Support Reactions in Three Dimensions
Ball and Socket Joint is one of the supports allowing free rotation about any axis. This freedom of rotation is...
Relative Velocity in One Dimension
Facial Feedback Hypothesis
Muscles for Facial Expressions

