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Updated: Jul 28, 2025

Single-stage Dynamic Reanimation of the Smile in Irreversible Facial Paralysis by Free Functional Muscle Transfer
Published on: March 1, 2015
Chemodenervation Algorithm: Functional and Aesthetic Considerations for Facial Harmony in Patients with Post-Facial
Laura Hetzler1,2, Sara MacDowell2,3, Jackie Diels4
1Department of Otolaryngology-Head & Neck Surgery, Louisiana State University Health Sciences Center, New Orleans, Louisiana, USA.
Botulinum toxin-A injections offer a refined approach to managing facial paralysis synkinesis. This method selectively targets overactive muscles for improved facial motion and symmetry.
Area of Science:
- Plastic Surgery
- Neurology
- Otolaryngology
Background:
- Facial paralysis synkinesis management has evolved, incorporating neuromuscular retraining, chemodenervation, and surgical techniques.
- Botulinum toxin-A (BoNT-A) is a primary treatment for synkinesis, shifting from symmetry-focused to selective muscle targeting.
- Neuromuscular retraining and soft tissue mobilization are vital adjuncts, though detailed protocols are beyond this scope.
Purpose of the Study:
- To present a descriptive platform for a chemodenervation treatment method for post-facial paralysis synkinesis.
- To detail a muscle-by-muscle algorithm for synkinesis therapy using BoNT-A.
- To compare and refine chemodenervation techniques through multidisciplinary collaboration.
Main Methods:
- A multi-institutional, multidisciplinary comparison of synkinesis treatment techniques.
- Utilized photographic and video documentation for review and discussion.
- Developed a detailed, region-specific, muscle-by-muscle algorithm for BoNT-A chemodenervation.
Main Results:
- Established a refined approach to BoNT-A chemodenervation for synkinesis.
- The algorithm considers facial anatomy and individual muscle overactivity.
- Selective muscle targeting allows for more organized recovery of facial motion.
Conclusions:
- Chemodenervation with BoNT-A is a key component in the evolving management of post-facial paralysis synkinesis.
- A structured, algorithmic approach enhances treatment precision and outcomes.
- This method facilitates improved functional and aesthetic results for patients with synkinesis.
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