Quantitative analysis of brow lifting with polydioxanone barbed threads using 3D imaging: A retrospective study

Objectives: As people age, facial ptosis leads to wrinkles, prompting interest in rejuvenation techniques such as thread lifting. This procedure targets sagging areas such as the jowl, nasolabial folds, brows, and double chin using barbed threads for enhanced tissue grip. The study explores polydioxanone (PDO) MINT threads, featuring 360° helical barbs, for brow lifting, hypothesizing stronger lifting effects due to their unique design. Results suggest barbed threads may effectively improve brow ptosis. Material and Methods: This retrospective single-arm cohort study analyzed 27 patients (4 males, 23 females) who underwent forehead lifting using molding-type barbed threads, which is one of the many types of MINT threads, from September 2022 to August 2023, with a 6-month follow-up. Patients were evaluated for procedural efficacy and side effects through expanded global aesthetic improvement scale (GAIS) scores and optional 3D imaging (Vectra H2). Results: This study evaluated the efficacy and safety of MINT PETIT PDO threads for brow lifting in 27 patients (mean age 48.8 ± 9.75 years). Results showed significant improvement in GAIS scores and 3D-measured eyelid length post-procedure ( p < 0.0001), though effects diminished over time due to thread absorption and tissue movement. Conclusion: This study explores MINT PETIT PDO barbed threads as a minimally invasive alternative to endoscopic brow lifts. The 360° helical barb design provides effective tissue anchoring, with subcutaneous insertion offering safety advantages over deeper techniques. While results showed significant initial improvement, effects diminished over time due to thread absorption and natural brow movement. Thread lifting may serve as a temporary solution or adjunct to surgical brow lifts, particularly for patients seeking less invasive options.