Outcomes of an innovative Sub-SMAS thread lifting for correction of mid-cheek groove

Abstract

Background The mid-cheek groove appearance is a common deficiency of the midface. This study described a novel deep plane thread lifting via the superficial muscular aponeurotic system (sub-SMAS) spaces incorporating with knit-circuit technique. Methods A total of 156 procedures were performed on 78 patients (5 men and 73 women, mean age of 43.21 ± 8.22 years old) in the study. Patients respectively underwent two rejuvenation procedures: (a) sub-SMAS plane thread lift and (b) supra-SMAS plane thread lift. Patients were followed up to 6 months. Clinical outcomes were evaluated using GAIS scores. Safety assessment was conducted for both types of thread –lifting procedures. Photographs were taken preoperatively and postoperatively for additional objective comparisons Results The patients of sub-SMAS group exhibited greater degree of improvement compare with that of supra-SMAS groups. The differences in GAIS score among groups significantly increased over time. Sub-SMAS group showed a lower GAIS score 6 months post-procedure than supra-SMAS (p < 0.01). Sub-SMAS was shown to have a longer lasting visible effect than supra-SMAS. Conclusions This deep plane thread lifting via the sub-SMAS spaces incorporating with knit-circuit technique is a safe procedure for correcting mid-cheek groove with favorable longevity.