Methods for Chin Area Augmentation: Efficacy Evaluation and Prospects for Using Subplatysmal Fat Autograft

Objective: In this study, we analyzed the existing chin augmentation methods and evaluated the effectiveness of using a subplatysmal fat autograft for augmenting insufficient chin projection. Materials and Methods: From January 2017 to December 2023, we studied 170 patients at the Department of Plastic Surgery, Sechenov First Moscow State Medical University, who presented with insufficient chin projection, localized fat deposits in the cervico-mental area, and age-related changes in the lower third of the face. The patients were divided into two groups: Group 1 (n = 93) consisted of patients who underwent chin augmentation using implants (Silastic, Medpor); Group 2 (n = 77) included patients who underwent medial platysmaplasty and chin augmentation using a fat autograft (subplatysmal autograft). Results: Chin augmentation was performed on all the patients with varying degrees of insufficient chin projection. The mean age was 36.5 ± 2 years. The average follow-up period was 18.9 months (range: 2–45 months). For chin augmentation using implants (Silastic, Medpor), +chin projection increases were observed as follows: 1.1–1.2 cm at 3 months, 0.9–2.3 cm at 6 months, and 0.8–1.7 cm at 12 months. The complications in this group included inflammatory processes in 7 (8%) patients, hematomas in 6 (6%) patients, and contour asymmetry in 13 (14%) patients. In the group that underwent chin augmentation with a subplatysmal fat autograft, the chin projection increased by 0.8–1.2 cm at 3 months, 0.7–1.3 cm at 6 months, and 0.6–1.9 cm at 12 months. The mean age was 38.3 ± 7 years, with an average follow-up of 18.3 months (range: 2–43 months). No infectious–inflammatory complications were observed. Aesthetic complications were noted in 14 (18%) patients. Conclusions: Among the existing methods for chin augmentation, many still consider osseous genioplasty to give more predictable results. However, its traumatic nature and lengthy rehabilitation period prompt surgeons to seek effective yet less invasive alternatives. When selecting a minimally invasive method for chin augmentation, preference is given to fat injections (lipofilling) and intraoperative use of autologous fat grafts. Augmentation using subplatysmal autologous fat grafts is a minimally invasive, safe, predictable, and long-lasting method for chin correction.