Flaps in Plastic Surgery

Q) A 48-year-old male undergoes excision of a chronic pilonidal sinus with a rhomboid-shaped defect over the sacrococcygeal region.

The reconstructive plan involves a local flap designed adjacent to the defect, where the flap is transposed into the primary defect and the donor site is closed primarily.

The flap follows the lines of minimal skin tension and relies on subdermal vascular supply without a named artery. What is the correct classification of this flap?


A. Rotation flap
B. Axial pattern transposition flap
C. Random pattern transposition flap
D. Advancement fasciocutaneous flap

Flaps in Plastic Surgery

Q) Z-plasty is an example of which type of surgical flap?
a) Advancement flap
b) Delayed flap
c) Transposition flap
d) Rotation flap


Answer for all 

Correct answer: c) Transposition flap

Explanation (optional):
Z-plasty is a type of transposition flap where triangular flaps are rearranged to reorient and lengthen a scar or contracted tissue. The central limb of the “Z” is aligned with the scar, and the lateral limbs are transposed to redistribute tension.

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