Background: Traditional neck rejuvenation—liposuction, platysmaplasty, and skin redraping—overlooks intrinsic mandibular-cervical asymmetry,digastric insertions, platysmal discontinuity, submandibular gland descent, and age-related hyoid retrodisplacement. These influence submental contour and require a tridimensional, anatomy-based correction. Methods: A retrospective study of 177 patients (99 women, 78 men; mean age 59 y, range 26–78 y) undergoing isolated neck rejuvenation (2003–2024) assessed outcomes of the 3D neck lift, which has been used since 2018 in Knize stage II–III and stage IV cases. The technique combines a triangular platysma myectomy forming a stabilizing neo-floor, partial digastric resection, and subplatysmal fat control, with platelet-rich plasma (PRP) (stages III–IV) or bipolar radiofrequency (stage IV). Results were evaluated by complications, morphology, and satisfaction. Results: Mandibular asymmetry (broad on the left side) was present in 92% of patients. Stage distribution was: I, 28%; II, 35%; III, 21%; and IV, 16%. Chin implants were added in 10%, PRP in 31%, and radiofrequency in 6%. Complications were minimal, consisting of 2 transient marginal mandibular pareses (<6 wk) and 10 seromas, only 3 of which occurred since 2020; all resolved after a single aspiration. Excellent or good cervicomental angle definition was achieved in 98% of cases, with 96% of patients satisfied or very satisfied. Conclusions: The 3D neck lift offers a personalized, single-incision solution to submental rejuvenation, integrating natural asymmetry, triangular platysma resection, and fibrotic stabilization to restore a stable cervicomental angle with low morbidity. Adjuncts such as PRP or radiofrequency enhance advanced cases but are nonessential. This method provides a reliable, scar-sparing alternative for isolated neck rejuvenation.
Divaris et al. (2026) studied this question.