Background: Tissue expanders are widely used for reconstruction of tissue defects. The choice of expander and planning the flap is complicated for the inexperienced surgeon.

Objective: To demonstrate the choice of expander sizes proper for the tissue defect and maximum advancement technique during the defect coverage.

Methods: The present study included 19 patients who were operated between January 2013 and January 2017. The expander projection was chosen in the manner that it would be more than the half length of the defect to be occurred and the expander width was chosen as wide as possible based on the area of its placement. After the expansion was completed, advancement method was used to cover the defect.

Inclusion Criteria:

• Patients treated with rectangular tissue expanders.
• Patients who attended to at least postoperative six months control.

Exclusion Criteria:

• Patients treated with tissue expanders other than rectangular expanders.
• Patients who did not attend to postoperative controls.

The present study included 19 patients who were operated using one rectangular expander between January 2013 and January 2017.