Purpose: The requirement for anatomic venous reconstruction in digit replantation is an ongoing area of research. In this study, we evaluated our institutional experience to study whether replantation success is affected by the presence or absence of vein repair, stratified by the level of injury.
Methods: A retrospective review was performed at an urban, level-1 trauma center of all single-digit replantations performed in adults from 2012 to 2021. Patient demographics, injury mechanism, level of injury, whether a vein was repaired, and replant survival were recorded.
Results: Sixty-seven single replanted digits were included. Patients were, on average, 38 years old, and 94% were men. The most common mechanism of injury was a sharp laceration (81%). The overall survival rates for all replantations were 68.7% (46/67) and 60% (12/20) for distal finger replantation. Patients with digital replantations at Tamai zone III or more proximal exhibited a 1.8 times increase in survival rates when one vein was repaired versus zero veins (84.4% vs 46.7%). Patients with digital replantations at Tamai zones I and II exhibited similar survival rates.
Conclusions: Replantations at or proximal to the middle phalanx should be repaired with at least one artery and vein to maximize the chance for success. However, for distal finger replantations, artery-only replantation is a viable option when vein anastomosis is not achievable.
Typo Of Study/level Of Evidence: Therapeutic IV.
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