Lifting Efficiency of Barbed Sutures for Potential Face Lifting Application: A Parametric Analysis

Area of Science:

• Biomedical Engineering
• Materials Science
• Plastic Surgery

Background:

• Absorbable barbed sutures are utilized in minimally invasive facial rejuvenation.
• Suture geometry variations lead to inconsistent clinical lifting outcomes.
• Quantifying suture geometry's impact on performance is crucial.

Purpose of the Study:

• To assess how barb rotation angle, orientation, and pulling speed affect barbed suture lifting performance and efficiency.
• To determine the optimal geometric design for enhanced facial lifting applications.
• To provide data-driven insights for next-generation suture development.

Main Methods:

• Barbs were fabricated with varied rotation angles (30°, 45°, 90°, 180°) and orientations (Forward, Reverse, Forward-Reverse, Reverse-Forward).
• Sutures were tested at pulling speeds of 10, 50, and 100 mm/min.
• Key metrics included maximum lifting/holding displacements and lifting efficiency, analyzed via ANOVA.

Main Results:

• Increased pulling speed (100 mm/min) maximized lift but reduced efficiency due to slippage.
• The 90° barb rotation angle demonstrated the highest lifting efficiency (35.5%) and stability.
• The Forward-Reverse orientation yielded the highest efficiency (35.5%), while Forward orientation provided the largest lift.

Conclusions:

• Barb geometry is a critical determinant of suture lifting performance.
• The Forward-Reverse 90° configuration offers optimal lifting efficiency and stability.
• This optimized design provides valuable guidance for developing advanced facial lifting sutures.