ABD Dermatologic Surgery 3

Question 1

Which flap moves tissue by pivoting around a fixed point to fill an adjacent defect?

Accepted Answer

Rotation flap

Answer

A rotation flap pivots curvilinearly around a fixed point to close a defect.

Question 2

A bilobed flap is most commonly used to reconstruct defects of which anatomic site?

Accepted Answer

Nasal tip and ala

Answer

The bilobed flap is classically used for distal nasal (tip/ala) reconstruction.

Question 3

Full-thickness skin grafts differ from split-thickness grafts by including?

Accepted Answer

Epidermis and full dermis

Answer

Full-thickness grafts contain the entire epidermis and dermis but no subcutaneous fat.

Question 4

What is the initial phase of skin graft survival before revascularization?

Accepted Answer

Imbibition

Answer

Plasmatic imbibition nourishes the graft by diffusion during the first 24-48 hours.

Question 5

Which relaxed skin tension line orientation minimizes scar visibility?

Accepted Answer

Parallel to RSTLs

Answer

Incisions placed parallel to relaxed skin tension lines heal with less noticeable scars.

American Board of Dermatology (ABD) Practice Test