Efficacy and safety study of 4 MHz monopolar radiofrequency in the treatment of facial and neck skin laxity
HAN Yu
LIU Qifang
CHEN Xi
YANG Xiaojie
SU Xin
LIU Di
ZHANG Yanxin
GUAN Xin
Abstract：Objective To evaluate the efficacy and safety of 4 MHz Monopolar Radiofrequency in the treatment of facial and neck skin laxity.Methods From January 2023 to December 2023,a retrospective analysis was undertaken on a cohort of 32 patients who un-derwent a single session of 4 MHz Monopolar Radiofrequency treatment specifically targeting the face and neck areas.Laxity scores for these regions were quantified using pre-treatment,3 months,and 6 months post-treatment photographs.Additionally,post-treatment as-sessments encompassed the Global Aesthetic Improvement Scale(GAIS),patient satisfaction surveys,and adverse reaction monitoring to comprehensively assess treatment efficacy and safety.Results Marked improvements were observed in facial laxity scores,which de-creased significantly from a baseline of(5.238±0.925)to(4.338±0.988)at 3 months(P＜0.001)and further to(3.969±0.967)at 6 months(P＜0.001).Similarly,the lower jaw laxity scores declined substantially from(4.750±1.052)to(3.769±0.870)at 3 months(P＜0.001)and(3.188±0.780)at 6 months(P＜0.001).Neck laxity also showed significant reduction,decreasing from(5.056±1.412)to(4.175±1.371)at 3 months(P＜0.001)and(4.031±1.356)at 6 months(P＜0.001).Post-treatment GAIS evaluations by both physicians and patients yielded high ratings(≥90％improvement or better)for skin laxity,wrinkles,facial contour firmness,lower jaw firmness,and facial lifting,with over 50％reporting substantial to very substantial improvement at 6 months.Patient satisfaction surveys revealed an overall sat-isfaction rate of 100％,with 97％expressing satisfaction or very high satisfaction.The average pain score was 3.66±2.27,and no adverse reactions were reported during or within 6 months post-treatment.Conclusion The application of 4 MHz Monopolar Radiofrequency is deemed to be extremely safe,as evidenced by the absence of any observed adverse reactions.
Keywords：4 MHzMonopolar radiofrequencyFacial and neckLaxitysafety
Publication Date：2025-02-14
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 65-69,78 )