Chapter 18. Scar Revision, Keloids, and Camouflage

Question 1

Ideal scar, except

a. Narrow
b. Flat
c. Parallel to relaxed skin tension lines
d. Perpendicular to relaxed skin tension lines

Answer 1

Ans. D

Question 2

Indications for scar revision, except

a. Perpendicular to relaxed skin tension lines
b. Parallel to relaxed skin tebsion lines
c. Webbed
d. Hypertrophied

Answer 2

Ans. B

Question 3

Principles for proper re-excision technique for scar revision, except

a. Slight vertical bevel outward from the
original scar to prepare the edges for proper everted closure
b. Routine undermining of 1 to 2 cm around the periphery of the wound to allow for reapproximation of skin edges
c. The use of buried subcutaneous sutures further
decreases wound edge tension
d. Horizontal mattress sutures can also prove helpful when wound edge eversion needs to be maximized

Answer 3

Ans. D (should be vertical mattress)

Question 4

Which technique lengthens scars?

a. Z plasty
b. W plasty
c. Geometric broken line closure
d. both A and B

Answer 4

Ans. A

Question 5

In Z-plasty, triangular flaps are transposed resulting to scar lengthening. Which of the ff is wrong?

a. 60 degrees = 75% scar lengthening
b. 45 degrees = 50% scar lengthening
c. 30 degrees = 25% scar lengthening
d. 15 degrees = 10% scar lengthening

Answer 5

Ans. D

Question 6

Difference between W-plasty vs Geometric broken line closure (GBLC)

a. W plasty creates regular irregularization of the scar line
b. GBLC creates irregular irregularization of the final scar line
c. W plasty use shorter limbs than GBLC
d. Both a & b

Answer 6

Ans. D

Question 7

Histologically,
________displays organized collagen bundles parallel to the epithelial surface,
________ have a wavier pattern to the collagen fibers with the same epithelial orientation,
________ have disorganized collagen fibers with a random orientation to the epithelial surface

a. Keloids
b. normal scar tissue
c. hypertrophic scars

Answer 7

Ana. B, C, A