Three-Dimensional Quantification of Facial Morphology and Movements Using a Wearable Helmet

This work proposes a 3D normative database of facial ranges of motion in adults free from facial disorders. Ten facial movements were analyzed, each targeting the activity of specific muscle groups innervated by the facial nerve. The experimental protocol included a test-retest reliability positioni...

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Published in:BioMed research international 2022, Vol.2022 (1), p.2774713-2774713
Main Authors: Guihard, Marina, Gracies, Jean-Michel, Baude, Marjolaine
Format: Article
Language:English
Subjects:
Adult
Adults
Asymmetry
Biomedical research
Clinical medicine
Disorders
Face
Face - anatomy & histology
Facial Muscles
Facial nerve
Facial Paralysis
Head Protective Devices
Health aspects
Helmets
Humans
Imaging, Three-Dimensional
Joints
Life Sciences
Male
Markers
Middle Aged
Morphology
Motion capture
Mouth
Movement
Muscle contraction
Muscles
Paresis
Physiological aspects
Protective equipment
Range of motion
Reliability analysis
Reproducibility of Results
Symmetry
Three dimensional motion
Wearable Electronic Devices
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cited_by cdi_FETCH-LOGICAL-c510t-946dfd953ba3551d0d3d04d17dd8766989ae0cf9703e419652f4216ff3598e33
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Gracies, Jean-Michel
Baude, Marjolaine
description This work proposes a 3D normative database of facial ranges of motion in adults free from facial disorders. Ten facial movements were analyzed, each targeting the activity of specific muscle groups innervated by the facial nerve. The experimental protocol included a test-retest reliability positioning procedure of 25 skin markers based on clinical expertise in facial morphology. Three maximal voluntary contractions were recorded for each facial movement studied, using a 3D facial motion capture helmet. We included 53 adults free from facial disorders (26 men; age 43±14), evaluated twice one week apart. The reliability of marker positioning was expressed as absolute measurement errors. The range of motion vectors of all markers from the best rest to the maximal voluntary contraction was calculated for each muscle group. Primary, secondary, and tertiary markers were extracted for each facial movement. 3D Procruste and asymmetry indices were developed. This allowed the identification of common thresholds of 10% for the asymmetry index and of 6 mm for the Procruste index, beyond which facial motions would be considered abnormally asymmetric. The normative database quantifies facial motions and allows assessment of the degree of clinical disorders by comparison. This protocol is currently being investigated in patients with chronic unilateral peripheral facial paresis.
doi_str_mv 10.1155/2022/2774713
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subjects Adult
Adults
Asymmetry
Biomedical research
Clinical medicine
Disorders
Face
Face - anatomy & histology
Facial Muscles
Facial nerve
Facial Paralysis
Head Protective Devices
Health aspects
Helmets
Humans
Imaging, Three-Dimensional
Joints
Life Sciences
Male
Markers
Middle Aged
Morphology
Motion capture
Mouth
Movement
Muscle contraction
Muscles
Paresis
Physiological aspects
Protective equipment
Range of motion
Reliability analysis
Reproducibility of Results
Symmetry
Three dimensional motion
Wearable Electronic Devices
title Three-Dimensional Quantification of Facial Morphology and Movements Using a Wearable Helmet
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