Functional Anatomy-Based Filler Injection for Lifting: What Is New?

Area of Science:

• Dermatology
• Aesthetic Medicine
• Facial Anatomy

Background:

• Contemporary filler techniques have evolved from simple volumization to functional anatomy-based lifting.
• This review synthesizes a framework integrating skin, SMAS (Superficial Musculoaponeurotic System), and ligamentous remodeling (SSLR).
• The SSLR approach aims for dynamic, expression-compatible facial elevation using minimal filler product.

Purpose of the Study:

• To present a framework for achieving dynamic facial lifting through a novel approach to filler injection.
• To explain the mechanism of facial lifting as a tension-redistribution phenomenon.
• To provide a reproducible, anatomy-guided strategy for facial rejuvenation.

Main Methods:

• Drawing on layer-specific anatomy and aging patterns, SSLR involves precise placement of small, high-cohesivity filler boluses.
• Injections are strategically delivered into sub-SMAS fat and dense ligamentous insertions.
• Dermal/subdermal microdeposits are used to enhance skin envelope and dampen wrinkle transmission.

Main Results:

• SSLR explains clinical lifting as a tension-redistribution phenomenon, independent of specific muscle action.
• Sub-SMAS expansion and ligament reinforcement lead to predictable improvements in midface descent, nasolabial folds, and jawline definition.
• Conservative filler volumes achieve significant rejuvenation, supported by observations of Ruffini-like mechanoreceptors influencing facial tone.

Conclusions:

• Functional anatomy provides a clear rationale for how small, plane-specific filler deposits yield substantial lifting effects.
• SSLR offers a reproducible, anatomy-guided strategy for restoring 3-dimensional facial harmony.
• This technique is applicable across diverse sexes and ethnicities while preserving natural facial animation.