Commentary on: "Tri-Vector Gracilis Microneurovascular Free Tissue Transfer with Periocular Component to Achieve a Duchenne Smile in Patients with Facial Paralysis" by Byrne et al.

In this commentary, we review Dr. Byrne and colleagues' article "Tri-vector Gracilis Microneurovascular Free Tissue Transfer with Periocular Component to Achieve a Duchenne Smile in Patients with Facial Paralysis." The authors successfully demonstrate the feasibility of separating the gracilis muscle into three bellies while maintaining neuromuscular input to achieve restoration of lower lid movement during smile, resulting in a more natural appearing or "Duchenne smile." Although the concept of spontaneity remains controversial, beautiful smile outcomes are illustrated in the featured photograph and videos.