Dynamic Evaluation of Glabellar Area Muscles Movement and Skin Displacement Using 3D Skin Displacement Vector...

Area of Science:

• Anatomy
• Dermatology
• Medical Imaging

Background:

• Three-dimensional (3D) skin displacement vector analysis enhances understanding of dynamic muscle anatomy.
• Glabellar dynamic muscle anatomy knowledge is crucial for safe and effective botulinum toxin injections for glabellar wrinkles.

Purpose of the Study:

• Investigate glabellar skin displacement patterns during muscle contraction.
• Utilize 3D skin vector displacement analysis to map facial movements.

Main Methods:

• 29 healthy individuals underwent facial imaging at rest and during maximal glabellar muscle contraction.
• Facial images were aligned to compute skin position differences, analyzing vector displacement.

Main Results:

• Two primary skin displacement patterns identified: lateral (89.66%) and central (10.34%).
• Asymmetric skin displacement observed in 62.07% of subjects.
• Specific glabellar patterns ('U', '11', 'X', 'π') correlated with distinct vector displacement angles.

Conclusions:

• The study provides crucial data for optimizing botulinum toxin treatments for glabellar wrinkles.
• Findings are particularly relevant for guiding treatments in Korean patients.