Etiology of scar, including mechanism and depth of burns.

Time interval since injury and reconstruction.

Medical comorbidities

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  Wound- healing problems.

  
  
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  Smoking history.

  
  
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  Bleeding disorders.

Social support network.

Assess size of scar and degree of scalp laxity.

Assess directionality of remaining hair.

Assess for other scars or affected body regions.

Viable option for smaller defects of the scalp.

Scalp tissue has less mobility than tissue in other parts of the body.

Large flaps should be designed to optimize result and minimize tension.

Common flap options: Rotation, advancement (V-Y), transposition, pinwheel, Orticochea.

Defects of up to 50% of the scalp can be reconstructed.

Preferred technique for scalp reconstruction.

Multiple expanders may be used for a single defect. More than one expansion may be performed.

Incisions are designed perpendicular to axis of expansion, can be placed within lesion to allow future excision.

Subgaleal placement.

Internal ports are less convenient but have a lower risk for infection compared with external ports.