Dynamic evaluation of facial muscles: 3D skin displacement vector analysis using a facial painting model.
3D skin vector
botulinum toxin
dynamic anatomy
education
face painting
Journal
Laryngoscope investigative otolaryngology
ISSN: 2378-8038
Titre abrégé: Laryngoscope Investig Otolaryngol
Pays: United States
ID NLM: 101684963
Informations de publication
Date de publication:
Aug 2021
Aug 2021
Historique:
received:
16
03
2021
revised:
09
05
2021
accepted:
16
05
2021
entrez:
17
8
2021
pubmed:
18
8
2021
medline:
18
8
2021
Statut:
epublish
Résumé
Botulinum toxin A can be used to eliminate dynamic wrinkles by relaxing the muscles involved in facial expressions. Therefore, it is essential to know the location, origin, insertion, function, and changes of the facial expression muscles according to their contraction. After drawing the muscles on the face of a model, pictures were taken at rest. The model was then asked to make facial expressions that cause facial wrinkles. All images were taken with the Vectra H1 camera system (Canfield Scientific, Inc., Fairfield, New Jersey). Each expression image was aligned to its respective static image to compute the differences in skin position, so as to calculate the skin displacement vectors. The values for local changes in skin displacement were calculated by applying the automated algorithms of the Vectra Software Mirror Suite and visualized using the color and size of the arrow. Face painting and 3D skin vector displacement analyses enabled visualization of all the facial muscles involved in facial expressions working dynamically, allowing us to visualize the effect of each muscle in the creation of hyperkinetic wrinkles. Face painting and 3D skin vector displacement analyses can be combined to determine the location of the wrinkles, extent of the muscle, part of the muscle that contracts, presence of asymmetry, direction in which the muscle contracts, and correlation between the antagonists and synergistic muscles. The botulinum toxin A injection educational model using body painting and 3D skin vector displacement analyses can provide a deeper understanding of actual moving muscle anatomy. 4.
Sections du résumé
BACKGROUND
BACKGROUND
Botulinum toxin A can be used to eliminate dynamic wrinkles by relaxing the muscles involved in facial expressions. Therefore, it is essential to know the location, origin, insertion, function, and changes of the facial expression muscles according to their contraction.
METHODS
METHODS
After drawing the muscles on the face of a model, pictures were taken at rest. The model was then asked to make facial expressions that cause facial wrinkles. All images were taken with the Vectra H1 camera system (Canfield Scientific, Inc., Fairfield, New Jersey). Each expression image was aligned to its respective static image to compute the differences in skin position, so as to calculate the skin displacement vectors. The values for local changes in skin displacement were calculated by applying the automated algorithms of the Vectra Software Mirror Suite and visualized using the color and size of the arrow.
RESULTS
RESULTS
Face painting and 3D skin vector displacement analyses enabled visualization of all the facial muscles involved in facial expressions working dynamically, allowing us to visualize the effect of each muscle in the creation of hyperkinetic wrinkles. Face painting and 3D skin vector displacement analyses can be combined to determine the location of the wrinkles, extent of the muscle, part of the muscle that contracts, presence of asymmetry, direction in which the muscle contracts, and correlation between the antagonists and synergistic muscles.
CONCLUSION
CONCLUSIONS
The botulinum toxin A injection educational model using body painting and 3D skin vector displacement analyses can provide a deeper understanding of actual moving muscle anatomy.
LEVEL OF EVIDENCE
METHODS
4.
Identifiants
pubmed: 34401486
doi: 10.1002/lio2.590
pii: LIO2590
pmc: PMC8356875
doi:
Types de publication
Journal Article
Langues
eng
Pagination
650-656Informations de copyright
© 2021 The Authors. Laryngoscope Investigative Otolaryngology published by Wiley Periodicals LLC on behalf of The Triological Society.
Déclaration de conflit d'intérêts
None of the authors have conflicts of interest nor financial interest in any of the products, devices, or drugs mentioned in this article.
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