Endoscopic Brow Lifts: A Comprehensive Analysis of Techniques and Outcomes

Introduction

One of the main causes of facial aging is the downward trend of the brows. The brow becomes ptotic as people age, which can result in lateral upper eyelid hooding and vision field deficiencies. Furthermore, despite being well-rested and in a positive mood, patients exhibiting these telltale indications of aging are sometimes misinterpreted by others as seeming angry or exhausted. Several well-documented surgical methods are currently available to enhance the brow's esthetics, from more modern endoscopic procedures to more conventional open treatments. Although each technique has advantages and disadvantages of its own, it is unclear whether a kind of brow lift surgery is better.

What Are the Signs of Aging in the Upper Face?

• Vertical Glabellar Lines: The corrugator supercilii muscle's (CSM) transverse head is what causes vertical glabellar lines.

• Oblique Glabellar Lines: The oblique head of CSM, the depressor supercilii muscle, and the medial Orbicularis oculi muscle (OOM) are among the brow depressors that create oblique glabellar lines.

• Transverse Dorsal Lines of Skin: The procerus muscle is responsible for the transverse dorsal lines in the skin.

• Lateral Eyebrow Ptosis: Gravity, the descent of the galeal fat pad, the instability of the superficial temporal fascia, and the actions of the transverse head (CSM) and lateral portion (OOM) are the causes of lateral eyebrow ptosis.

• Pseudo-Excess Skin on Upper Lids: Lid hooding, or pseudo-excess upper eyelid skin, is a side effect of brow ptosis that is most noticeable laterally. It is sometimes called "pseudo-blepharoptosis" when the skin of the upper eyelid hangs over the lash line.

• Transverse Skin Lines Across the Forehead: Caused by the frontalis muscle, the only brow elevator, are transverse forehead skin lines.

What Are the Things Required for Endoscopic Brow Lifts?

Before Surgery:

• Use an alcohol pad or solution to clean the skin before injecting and to mark the incisions and landmarks.

• Marking the intended sites of incisions using a surgical marker.

• Local anesthesia (e.g., one percent Lidocaine with Epinephrine 1:100,000; 7 mg/kg is the maximum dosage of Lidocaine and Epinephrine).

• Tumescent solution (e.g., saline, 0.1% Lidocaine, and Epinephrine 1:100,0000).

• Antiseptics for the skin, like Povidone-iodine.

• Lubricant and a corneal shield to keep the eyes safe.

During the Surgery:

• Video monitor with endoscopic instruments (e.g., 5 mm, 30-degree rigid endoscope with retractor/cowling).

• A range of curved dissectors and periosteal elevators, including the Ramirez, Freer, and Daniel types of periosteal elevators.

• Fixation Method: there are several methods available, such as suture fixation to screws, plates, and bone tunnels; resorbable tine-fixation devices that engage the periosteum and the underlying bone are also available.

• A scalpel (blade number 15) is used for the procedure.

• Forceps (for atraumatic handling of sensitive tissues featuring fine teeth).

• Scissors for facelifts or similar dissection tools.

• Electrocoagulant or electrocautery apparatus.

• Little retractor devices or skin hooks.

• Adsorbable and non-absorbable sutures or staples.

Following Surgery:

• Antibiotic ointment or petroleum jelly is applied post surgery.

• Materials for Headwraps: ace wrap, kerlix wrap, and non-stick dressing.

What Are the Preparations Made for the Brow Lift Surgery?

• A 5-view head series should be used to capture photographic images of the patient when they are seated, upright, and not moving their faces. Documentation is also necessary for up-and downward-gazing, lateral-gazing, and closed-eye views.

• The sentinel vein, the frontal branch of the facial nerve, the supraorbital notch, and the supposed highest point of the brow are landmarks to be aware of.

• Incisions are placed. Usually measuring less than 0.78 inches in length, the three frontal hairline incisions—one median and two paramedian—are positioned 0.39 inches posterior to the hairline.

• Local anesthesia is infiltrated along the lateral and supraorbital orbital rims. Subperiosteally, the tumescent solution is injected into the superficial temporal regions bilaterally, first from the supraorbital rim to the vertex along the superior temporal lines. While local anesthetic can be used for the entire endoscopic brow lift procedure, intravenous sedation or general anesthesia is advised to enhance patient comfort. Further nerve blocks of the auriculotemporal and zygomaticotemporal nerves can reduce intra- and postoperative pain when using intravenous sedation.

• A single intravenous antibiotic dose is advised to prevent infection before the procedure, especially if implants are going to be implanted.

What Are the Techniques Used for Endoscopic Brow Lift?

• For an endoscopic brow lift to be successful, the surgeon must follow anatomic dissection planes, use cautious operative procedures, and visualize particular anatomic features directly at critical junctures in the treatment. Here, we offer dependable and secure endoscopic brow lift procedures.

• Midline and paramedian incisions are made by the surgeon through all scalp layers, all the way down to the cranium. Only the deep temporal fascia, or the fascia of the temporalis muscle, is cut during the temporal incisions.

• The midline and paramedian ports are utilized for blind dissection (without the endoscope) to create a full-thickness subperiosteal pocket that connects the temporal lines using a curved periosteal elevator.

• With caution to avoid damaging the supraorbital neurovascular bundles, the arcus marginalis is entirely released using the 30-degree endoscope (inserted through the midline port) and endoscopic instruments (inserted through the paramedian ports).

• Once periosteal elevation is finished, individuals with deep foreheads and glabellar rhytids may choose to have resection or ablation of the frontalis, corrugators, and procerus muscles.

• The tissue plane between the temporalis fascia, which overlies the temporalis muscle, and the temporoparietal fascia, which is the superficial temporal fascia, is then dissected by introducing a curved elevator through the temporal port.

• The zone of adherence at the superior temporal line is then sharply divided to connect the lateral and central dissection chambers. This is usually most easily achieved by passing an elevator from lateral to medial.

• Fixation is typically completed at the paramedian ports after the temporal ports. The temporoparietal fascia and the deep temporalis fascia are attached using a large permanent or semi-permanent suture (such as 0-0 nylon or polydioxanone) in a vector that runs from the ala to the lateral canthus.

• For the incision on the scalp, petrolatum or antibiotic ointment is used, and then either skin staples or sutures are used to close the wound. In most cases, drains are not required. Instead, a light forehead wrap can be applied as a pressure dressing; only be careful not to apply downward traction to the forehead as this could lessen the amount of lift that is accomplished.

• Finally, if one is planning on having a concurrent upper blepharoplasty, one should wait until after the brow lift is finished to do the blepharoplasty. This is because the brow lift lessens the amount of skin that is required to be excised during the blepharoplasty and decreases upper eyelid skin redundancy.

What Are the Indications?

Causes of Brow Lift Surgery Indications:

• Ptosis of the brow.

• Deep furrows and/or rhytides running over the glabella, nasal radix, and/or forehead.

• The appearance of extraneous or heavy temporal skin or forehead.

• Visual field limitation and/or pseudo-blepharoptosis.

When to Use Open vs. Endoscopic Techniques:

• Patient preference for less noticeable scarring and/or a less invasive operation.

• The patient's forehead is short—less than 2.36 inches from brow to hairline.

What Are the Contra-Indications?

Contraindications for Surgery on the Brow Lift:

• Lagophthalmos.

• Greater than 3–4 mm of asymmetry in brow height. It is challenging to apply noticeably more upward force to one side of the forehead than the other because this approach raises the forehead as a whole.

• Past blepharoplasty or history of dry eye problems (increased incidence of lagophthalmos).

• Unrealistic demands made by the patient. Women's brows should be arched, with the highest point falling just above the supraorbital rim and in between the lateral limbus and lateral canthus. Working on men whose eyebrows should be flatter and sit at the supraorbital rim is different from this method. However, there is no one perfect eyebrow; therefore, to maximize results, communication between the surgeon and the patient is crucial.

• Body dysmorphic disorder.

List of Conditions That Preclude Endoscopic Surgery for a Brow Lift:

• Extreme hairline regression (the hairline may be somewhat raised by the endoscopic brow raising)

• Frontal bossing and/or an excessively curved forehead (which prevents endoscopic instruments from going to the periorbita).

Conclusion

One of the main causes of facial aging is the downward trend of the brows. The brow becomes ptotic as people age, which can result in lateral upper eyelid hooding and vision field deficiencies. Furthermore, despite being well-rested and in a positive mood, patients exhibiting these telltale indications of aging are sometimes misinterpreted by others as seeming angry or exhausted. There are currently several well-documented surgical methods available for enhancing the aesthetics of the brow, from more modern endoscopic procedures to more conventional open treatments.