Endoscopic Brow Lift Surgical Technique
The endoscopic brow lift is performed through small scalp incisions (typically 3-5 ports) using endoscopic visualization to elevate the brow via either supraperiosteal (subgaleal), subperiosteal, or multiplane dissection, with fixation achieved through bone tunnels, absorbable devices, or sutures.
Core Surgical Approach
The procedure utilizes minimally invasive access through multiple small incisions hidden within the hairline, allowing endoscopic visualization of the surgical field 1, 2. This approach offers reduced scarring, shorter recovery, and lower sensory complications compared to traditional open techniques 1.
Dissection Planes
Three principal anatomical planes are employed 1:
- Supraperiosteal (subgaleal): Dissection above the periosteum, staying in the loose areolar tissue plane
- Subperiosteal: Elevation beneath the periosteum, providing more direct access to the orbital rim
- Multiplane (combined): Hybrid approach that may optimize the balance between surgical efficacy and nerve safety 1
The multiplane approach appears to offer the optimal balance between effective brow elevation and minimizing supraorbital nerve injury 1. The deep branch of the supraorbital nerve is the critical structure at risk, and its tension directly limits the degree of achievable brow elevation 1.
Fixation Methods
Based on analysis of 2,519 patients across multiple fixation techniques 3:
- Bone tunnel fixation (most common, 649 patients): Demonstrates the lowest complication profile across all categories 3, 4. The galea-aponeurotic flap is secured through drill holes in the outer cortex using nonabsorbable sutures 4
- Endotine devices: Absorbable fixation system (333 patients studied) 3
- Suture fixation: Simple suture techniques (906 patients) 3
- Screw fixation: Associated with highest complication rates across all categories 3
Bone tunnel fixation should be the preferred method given its superior safety profile 3, 4.
Expected Outcomes
Average brow elevation achieved is approximately 8 mm, with patient satisfaction averaging 6.98/10 4. Measurements track:
- Brow-to-pupil distance (BPD)
- Brow-to-lateral canthus distance (BLCD)
- Brow-to-medial canthus distance (BMCD)
One study demonstrated BPD increases from 19mm to 24mm at six months postoperatively 5.
Complications and Safety
Neurological complications are most common (11.69%), followed by aesthetic issues (6.27%), with wound-related complications being rare (1.19%) 3. The most significant complication is temporary unilateral frontal nerve weakness 4. Overall complication rates remain minimal across all techniques, supporting the efficacy and safety of the endoscopic approach 3.
Critical Limitations
The procedure is contraindicated when the eyebrow-to-hairline distance exceeds 12 cm, as this creates an excessively high hairline postoperatively 4.
Anatomical Considerations
Considerable variability exists in supraorbital nerve anatomy, complicating surgical standardization 1. The arcus marginalis should be preserved to eliminate risk of eyebrow malpositioning 6. Subgaleal dissection reduces scarring, numbness, and hair loss compared to open techniques 6.