Importance of the ribbon sign, indicating unsuitability of the vessel, in replanting a finger.

Abstract

A marked tortuosity of the digital arteries ("ribbon" sign) at the site of a digit amputation is a sign of a severe avulsion injury to the neurovascular bundles. When this finding is present, the artery should be resected and the gap bridged by a vein graft, if revascularization is attempted. 

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