RESUMO
In general, excision of a constriction ring is not difficult when performed several months after birth, but care should be taken to excise the scar tissue in newborns so as to avoid neurovascular damage. Although Hall et al. and Greene described successful one-stage operations in cases of forearm and leg constriction rings, a two staged Z-plasty around the circumference of the constriction is recommended in neonatal balloon. The authors in this article excised constriction ring through a single operation with Z-plasty, and restored digital contour. In order to preserve neurovascular structures, the authors employed loupe(x3.5) and prevented inadequate sensation and cold intolerance, which may occur after surgery. A one-stage release of congenital constriction ring was performed for 5 constriction rings in four extremities(one patient). No wound problems occurred, even when there had been marked congestion of the extremity distal to the constriction ring. The one-stage release facilitated postoperative care, and there was no need for additional anesthesia or for additional operations, which are necessary when this problem is treated with a release performed in two or three stages.