Z plasty technique and uses

What is Z plasty?

It is a technique of wound closure, which involves transposition of two adjacent triangular-shaped flaps.

Uses of Z plasty

  • Increase the length of an area of tissue or scar
  • Break up a straight-line scar
  • Realign a scar.

Degrees commonly used in Z plasty

• The degree of elongation of the longitudinal axis of the Z-plasty is directly related to the
angles of its constituent flaps.
∘ 30∘ → 25% elongation
∘ 45∘ → 50% elongation
∘ 60∘ → 75% elongation
∘ 75∘ → 100% elongation
∘ 90∘ → 125% elongation.

• Flaps with 60∘ angles are most commonly used as they lengthen without undue tension.

• The amount of elongation can be worked out by starting at 30∘ and 25% and adding 15∘
and 25% to each of the figures.

Requirements while planning an Z plasty

  • All three limbs should be of the same length.
  • The angles of the two flaps need not be equal and can be designed to suit local tissue


• Used to break up the line of a scar and improve its aesthetics.
• Unlike the Z-plasty, it does not lengthen tissue.
•Oone of the limbs of the W-plasty should lie parallel to the RSTLs so that half of
the resultant scar will lie parallel to them.
• This technique discards normal tissue, which may be a disadvantage in certain areas

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