ABPS Surgical Anatomy & Reconstructive Techniques 5

Question 1

The nasolabial flap used for oral cavity reconstruction is supplied by perforators from which artery?

Accepted Answer

Facial artery

Answer

The nasolabial flap is supplied by perforators from the facial artery, which provide a reliable axial blood supply to the nasolabial fold skin.

Question 2

Which of the following best describes the anatomical basis of the 'safe zone' for deep plane facelift dissection?

Accepted Answer

Dissection deep to the SMAS but above the parotid-masseteric fascia protects facial nerve branches

Answer

In the deep plane, dissection deep to SMAS but superficial to the parotid-masseteric fascia keeps the facial nerve protected beneath the fascia while mobilizing the SMAS-platysma unit.

Question 3

The pectoralis major myocutaneous flap used in head and neck reconstruction is based on the pectoral branch of which artery?

Accepted Answer

Thoracoacromial artery

Answer

The pectoralis major myocutaneous flap is reliably based on the pectoral branch of the thoracoacromial artery, a branch of the axillary artery.

Question 4

In lower extremity reconstruction using the anterolateral thigh (ALT) flap, the perforators most commonly arise from which source vessel?

Accepted Answer

Lateral circumflex femoral artery descending branch

Answer

ALT flap perforators most commonly arise from the descending branch of the lateral circumflex femoral artery, located in the septum between the rectus femoris and vastus lateralis.

Question 5

Reconstruction of a full-thickness lower eyelid defect involving more than 50% of the lid length typically requires which technique?

Accepted Answer

Hughes tarsoconjunctival flap with a skin graft

Answer

Defects exceeding 50% of lower lid length require both posterior lamellar reconstruction (Hughes flap for tarsoconjunctiva) and anterior lamellar coverage, typically with a skin graft.

(ABPS) Certified American Board of Plastic Surgery Practice Test

(ABPS) Certified American Board of Plastic Surgery Practice Test

ABPS Surgical Anatomy & Reconstructive Techniques 5