Objectives: 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.
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.

Introduction: 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.

Materials / method: 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

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: 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.

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Objectives: To study uncommon application of botulinum toxin such as Trapezius, Gastrocnemius, Temporalis m.

Introduction: Use of botulinum toxin for aesthetic purpose has rapidly expanded over the last 30 years. Today, author will introduce uncommon application of botulinum toxin such as Trapezius, Gastrocnemius, Temporalis m.

Materials / method: 1. Trapezius m-
Injection point
- Prominently protruding portion
- 5 points, 2~3cm apart
Dilution
:Botulax®100U + 5ml of Saline
(2 U per 0.1 ml)
0.2ml(4U) injection/each
Deep subQ. to IM injection
2. Gastrocnemius m
Injection point
- Prominently protruding portion - distal 2/3
- 7 points, 2~3cm apart
Dilution
:Botulax®100U + 2.8ml of Saline
50 units/one side
7 U per 0.2 ml
0.2ml injection/each point
IM injection
3. Temporalis
Injection point
- Prominently protruding portion
- 3 points, 1cm apart
Dilution
:Botulax®100U + 2.5ml of Saline
4 U / 0.1 ml
0.2ml inject

Results: Making beautiful neck is so complicated that trapezius m. is very wide and we must reduce small area of this muscle not total.
If we inject widely and potently, we can obtain good result but complication rate is markedly elevated.
so we keep safe protocols of this area injection.

Conclusion: 1. Trapezius m
Do not over-inject
more than 20unit/each side
-weakness of Trapezius m.
Do not inject not enough muscle power
Caution of discomfort at combing, zipping, elevating arm
2.3. Gastrocnemius, Temporalis m
Should look the whole muscle
Injection cover area not just prominent portion

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