Options for thumb revascularization: our experience and literature review

Traumatic injuries to the thumb resulting in segmental loss of a digital artery are not uncommon. To bridge the gap and repair a transacted digital artery, the superficial palmar arch or the radial digital artery of the index finger can be used to reconstruct the ulnar digital artery of thumb for revascularization. Revascularization following segmental loss resulting from a crushed ulnar digital artery of the thumb can be performed based on the superficial palmar arch or the radial digital artery of the index finger, avoiding anastomosis at two sites and hence providing better results. The digital vein from the index finger can also be used to enhance the venous return of the injured thumb. However, because of known variability in the palmar arch, intraoperative verification is needed to ensure the safe transfer of the arch or the radial digital artery of the index finger. The aim of this article is to discuss the possibilities for thumb revascularization, using a case report in which the injured thumb was revascularized with a superficial palmar arch.