Related Experiment Video
Updated: Aug 11, 2025
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Single-stage Dynamic Reanimation of the Smile in Irreversible Facial Paralysis by Free Functional Muscle Transfer
Published on: March 1, 2015
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Microvascular Gracilis Free Flap: Single and Double Innervation.
Rahul Varman1, Matthew Q Miller1
1Department of Otolaryngology-Head and Neck Surgery, Division of Facial Plastic and Reconstructive Surgery, University of North Carolina, Chapel Hill, NC, USA.
Atlas of the Oral and Maxillofacial Surgery Clinics of North America
|February 8, 2023
Summary
Facial paralysis (FP) can be treated with free gracilis muscle transfer (FGMT) for smile restoration. Dual-innervation FGMT shows promise for achieving both spontaneous smiles and reliable voluntary movement in FP patients.
Area of Science:
- Plastic Surgery
- Reconstructive Surgery
- Facial Nerve Surgery
Background:
- Facial paralysis (FP) significantly impacts patients' quality of life, causing aesthetic, social, and emotional distress.
- Free gracilis muscle transfer (FGMT) is a surgical option for smile restoration in select FP patients.
- Current FGMT techniques include masseteric-driven (reliable voluntary smile) and cross-face nerve graft-driven (spontaneous smile, higher failure rates).
Purpose of the Study:
- To evaluate the potential of dual-innervation FGMT for smile restoration in facial paralysis.
- To compare the outcomes of dual-innervation FGMT with existing FGMT techniques.
- To identify surgical considerations for optimizing smile aesthetics and function.
Main Methods:
- Review of early studies on dual-innervation FGMT for facial paralysis.
- Comparison of success rates and smile characteristics between different FGMT techniques.
- Analysis of surgical techniques aimed at minimizing facial bulk and achieving natural smile aesthetics.
Main Results:
- Dual-innervation FGMT may offer the possibility of a spontaneous smile while retaining the reliability of masseteric-driven FGMT.
- Masseteric-driven FGMT provides a reliable voluntary smile.
- Cross-face nerve graft-driven FGMT can achieve a spontaneous smile but is associated with higher failure rates.
Conclusions:
- Dual-innervation FGMT presents a promising approach for smile restoration in facial paralysis, potentially combining the benefits of existing methods.
- Careful surgical technique, including minimizing bulk and precise suture placement, is crucial for natural-appearing results.
- Further research is needed to fully establish the efficacy and long-term outcomes of dual-innervation FGMT.
