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Laser-assisted lipolysis for neck and submental remodeling in Rohrich type IV patients: fact or fiction?

BACKGROUND: Since the first studies by Apfelberg in 1994 and the mathematical model of Mordon introduced in 2004, laser-assisted lipolysis (LAL) has been on the rise. In a previous study, we presented our results in patients treated with LAL for Rohrich type I to III aging neck. The average cervicomental angle decreased from 152.6 ± 5.9 to 123.6 ± 8.8 degrees after LAL. This demonstrated a systematic decrease in fat thickness, and improved skin tightening.

OBJECTIVE: This new protocol focuses solely on LAL in the Rohrich type IV aging neck.

METHODS: Between June 2012 and February 2013, a prospective study was performed on 10 patients treated with LAL for Rohrich type IV aging neck. The laser used in this study was a 1470 nm diode laser (Alma Lasers, Caesarea, Israel). Laser energy was transmitted through a 600 μm optical fiber and delivered in a continuous mode, at 15 W power. Previous mathematical modeling suggested that 0.1 kJ was required in order to destroy 1 ml of fat. Patients were asked to fill out a satisfaction questionnaire. The cervicomental angle was measured 6 months postoperatively, and compared with the preoperative values.

RESULTS: No seromas were observed, but prolonged edema was observed in two patients. Pain during anesthesia and discomfort after the procedure were minimal. The average cervicomental angle decreased from 191.5 ± 5.7 to 164.9 ± 14.2 degrees (p < 0.01). This demonstrated a systematic decrease in fat thickness and improved skin tightening. Even though the cervicomental angle was higher than 140° in each case, the investigators, in agreement with the patients, decided to perform a complementary surgery with platysma muscle advancement and plication six months after LAL, in only two of the ten patients. This complementary surgery led to a mean cervicomental angle of 140.2 ± 11.4, and fair satisfaction of both patients and investigators.

CONCLUSION: LAL alone appears insufficient for complete remodeling in Rohrich type IV aging neck. While LAL alone is sufficient for Grade I to III, a complementary surgery must be added for Grade IV.

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