Himi-Lengthening Genioplasty: A Modified Technique for the Correction of Mandibular Asymmetry.

Mandibular asymmetry is among the most common facial anomalies. Traditionally, mandibular asymmetry with malocclusion has been treated with orthognathic surgery and genioplasty. However, routine genioplasty cannot achieve a satisfactory contour. Hence, this study presents a modified technique, himi-lengthening genioplasty, to resolve this matter. By combining this technique with orthognathic surgery, the authors successfully corrected mandibular asymmetry in 1-stage surgery, achieved ideal occlusion, and reconstructed the esthetic contour. No complications occurred during the 6-month follow-up period. Therefore, the authors recommend our modified surgical technique for its effectiveness, security, stability, and simplicity.