2017 Volume 30 Issue 2 Pages 49-52
This study aimed to evaluate the risk factors affecting the survival rate of replantation for an amputated digit caused by avulsion injury. A cohort of 20 patients with 27 digital replants from avulsion injuries and mean age of 46.5 years (range, 6-79 years) were enrolled in this study. The data collected included age, sex, smoking history, zone of injury, preoperative time, the amputated digit, level of surgical expertise, method and number of anastomosed vessels, and the bone fixation technique. The survival rate of replanted digits was 52%. Arterial thrombosis occurred in 6 digits within the first 0-86 hours, and venous thrombosis in 11 digits within the first 0.5-108 hours. On univariate analysis, there were no risk factors affecting survival rate of replantation. Based on the examination of circulatory insufficiency after replantation, adequate reconstruction of the arterial flow may be especially important for survival of the amputated digit caused by avulsion injury. To improve the survival rate of finger avulsion injuries, we believe that it is also necessary to record and collect more information about the arterial damage state and reconstruction method of the artery during replantation.
