This study aims to evaluate the long-term psychosocial and functional outcomes of successful digital replantation following traumatic amputation.

Patients that underwent successful replantation (i.e. no secondary amputation following replantation) of one or more traumatically amputated digits between January 2009 and April 2019 were invited to participate in this study. In addition to a custom questionnaire on psychosocial and socioeconomic aspects of life, various Patient-Reported Outcomes Measurement Information System (PROMIS) questionnaires regarding global health, upper extremity function, and depressive symptoms were completed. Bivariate analyses were performed to identify significant associations between outcomes and explanatory variables.

Thirty-six patients were successfully enrolled and completed the questionnaires at a median follow-up of 6.1 years. The median PROMIS score for Upper Extremity Function (40.6) was considerably different from the score that is typically found in the general population (all PROMIS instruments are calibrated with a control group score of 50.0), but the median PROMIS scores for Global Health – Physical (49.0), Global Health – Mental (50.7), and Depression (45.6) were comparable to those among the general population. Dominant hand injury, a greater number of injured digits, higher age at the time of injury, and the need for neuropathic pain medication were associated with lower Upper Extremity Function scores (all p < 0.05). Additionally, the presence of neuroma was associated with negative changes in both household finances and mental well-being (p < 0.05).

At long-term follow-up, a majority of patients that underwent replantation of traumatically amputated digits seem to cope well based on psychosocial and functional outcomes. However, neuropathic pain and the presence of neuroma are strong negative factors. Specific attention to digital nerves at the time of surgery is crucial in the management of traumatic amputations.