Facial Cosmetic Surgery Flashcards

Which anatomic boundary defines the safe zone for injection of hyaluronic acid fillers in the glabellar region to minimize vascular occlusion risk?

Answer: Deep to the corrugator supercilii muscle in the supraperiosteal plane

Injecting deeply in the supraperiosteal plane in the glabella minimizes risk of intravascular injection by staying away from the supratrochlear and supraorbital vessels.

A patient presents with a pinched nasal tip and breathing difficulty two years after rhinoplasty. What is the most likely structural cause?

Answer: Over-resection of the lower lateral cartilages causing internal valve collapse

Aggressive cephalic trim of the lower lateral cartilages weakens the lateral crura, causing collapse of the internal nasal valve and a pinched tip appearance.

Which suture layer is critical to close during the external rhinoplasty approach to prevent a widened, visible transcolumellar scar?

Answer: Deep dermal interrupted absorbable sutures before skin closure

Careful deep dermal suture placement eliminates tension on the skin edges, preventing a wide or depressed transcolumellar scar.

In the Treacher Collins syndrome patient requiring orbital and zygomatic reconstruction, which embryologic structure fails to develop correctly?

Answer: Neural crest cells of the first and second branchial arches

Treacher Collins syndrome results from failed migration or apoptosis of first and second branchial arch neural crest cells, causing hypoplasia of the zygoma, mandible, and ear.

Which filler property is most important when selecting a product for deep injection to correct malar volume deficiency?

Answer: High G-prime (high cohesivity) for lift and projection

High G-prime fillers resist deformation and provide structural lift when injected deeply to restore malar projection.

A 52-year-old patient presents with bilateral temporal hollowing contributing to an aged appearance. Which fat compartment, when augmented, most directly corrects this finding?

Answer: Deep temporal fat pad

The deep temporal fat pad undergoes significant age-related atrophy, and its augmentation restores fullness to the temporal hollow.

Which postoperative instruction is most critical following rhinoplasty to prevent prolonged edema and maintain tip definition?

Answer: Tape the nasal tip with Micropore tape for several weeks post-splint removal

External taping after splint removal applies gentle compression that reduces scar tissue formation and helps maintain tip refinement during healing.