The transposition of two triangular flaps. The incisions are designed to create a Z shape with the central limb aligned with the part of the scar that needs lengthening or re-aligning. The traditional 60° angle Z-plasty will give a theoretical lengthening of the central limb of 75%.. Single or multiple z-plasties can be used. Specific modifications include the double-opposingeo z-plasty (sometimes called a "jumping man") which can be useful for release of webbing of the medial canthus or release of 1st web space contractures.

The lengthening of a scar. Used to help relax or release linear burn scar contractures. The technique is dependent on the availability of mobile adjacent skin.

The irregularisation of a scar to make it less noticeable. Re-alignment of the central limb can place the scar in natural skin tension lines and thereby disguise it. One of a family of similar techniques (such a W plasty).A cosmetic Z- Plasty is when Paediatric plastic surgeons make two triangular flaps too accomidate the Z-shaped scar.