The Deep Fascia of the Infraorbital Region, Deep Plane, and Suprafibromuscular Facelift: New Anatomy for Safer Facelifting (PMID: 36261112)
Research Question
Is there a distinct deep fascial layer in the midface, and can identifying this structure improve the safety and precision of deep-plane facelift surgery?
This study investigated the existence and surgical relevance of a previously under-described fascial layer in the facial region.
Methods
The authors combined anatomical dissection, histological analysis, and clinical surgical correlation.
Key components included:
Dissection of 100 hemifaces over a 10-year period
Histological examination of facial tissue specimens
Intraoperative correlation from 300+ deep-plane facelift surgeries
Identification and mapping of fascial planes in the midface
The focus was on understanding the relationship between fascial layers, fat compartments, and facial nerve pathways.
Key Findings
The study identified a distinct deep fascial layer in the midface.
Main findings included:
A true deep fascial layer exists in the infraorbital and midface region, termed “Chiara’s fascia”
This fascia:
Lies beneath the superficial musculoaponeurotic system (SMAS)
Is continuous with the superficial layer of the deep temporal fascia
Inserts at the periosteum of the inferior orbital rim (arcus marginalis)
It separates key fat compartments:
Suborbicularis oculi fat (SOOF)
Preperiosteal fat
This fascial layer forms a structural “plane” that guides safe surgical dissection
Histological evidence confirmed a fibrofatty fascial layer consistent with anatomical dissection findings
Blunt dissection along this plane reduces risk of injury to facial nerve branches, especially those innervating upper lip elevators (e.g., zygomaticus region muscles)
Clinically, surgeons reported consistent identification of this fascial plane in all specimens and cases.
Surgical and Anatomical Implications
The authors propose a refined surgical technique called the suprafibromuscular facelift, based on this fascial plane.
Key implications include:
Improved safety during deep-plane facelifting
More predictable dissection pathways
Better preservation of facial nerve branches
Enhanced understanding of facial retaining ligaments and fat compartment anatomy
This reframes facelift surgery around a more precise fascial anatomy model.
Why It Matters for Fascia
This study demonstrates that fascia is not only relevant in musculoskeletal systems but is also critical in fine anatomical surgical navigation.
It highlights that:
Fascial planes define functional and surgical compartments in the face
Deep fascia can act as a protective guide for neurovascular structures
Understanding fascial continuity improves both safety and outcomes in surgery
Fascia is a key anatomical organizer across the entire body, including facial regions
This expands fascial science into clinical precision anatomy and surgical safety applications.
5 Takeaways
A distinct deep fascial layer exists in the midface (Chiara’s fascia).
This fascia separates key fat compartments and guides surgical planes.
It is continuous with deep temporal fascial structures.
Identifying this plane helps protect facial nerve branches during surgery.
Fascia plays a critical role in safe and effective facelift procedures.