The SIEA angiosome is variable and ranges from 0 to 100 percent of the lower abdominal flap. Intraoperative perfusion measurements are indispensable for evaluating the sufficiency of this pedicle for tissue transfer, especially if the contralateral flap zones are needed for reconstruction.
The use of the space maker is a scar-sparing technique. Time of operation and overall duration of expansion are reduced. Patient comfort is clearly improved. The negligible costs of a space maker are compensated by the cost reduction due to shorter operating time, fewer outpatient contacts and a low complication rate. The indications for the use of balloon dissectors are the expansion of skin (scar correction after burns, trauma, tumour), breast reconstruction and augmentation, and the prefabrication and rapid intraoperative expansion of musculocutaneous flaps.
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