Which surgical dissection technique allows for the dissection of depressor muscles during a brow lift?

• A. Subperiosteal dissection
• B. Subgaleal dissection
• C. Endoscopic dissection
• D. Open dissection

Answer: (B)

The subgaleal dissection technique is favored in brow lift procedures for its effectiveness in providing adequate exposure while minimizing injury to the neurovascular structures. This approach involves dissecting beneath the galea aponeurotica, which allows for elevation and repositioning of the forehead tissue. The subgaleal plane also facilitates access to the depressor muscles, such as the procerus and the corrugator supercilii, which are crucial in modifying frown and eyebrow positioning during the surgical lift.

In this context, the other options represent different techniques that do not specifically address the functional needs of altering the depressor muscles in a brow lift. Subperiosteal dissection is primarily used for its access to deeper structures, while endoscopic dissection is appropriate for minimally invasive approaches but may not directly target the necessary musculature. Open dissection provides visibility but can lead to more extensive scarring and does not offer the same controlled access to the specific muscle groups relevant in this procedure.