Deep burn surgery of the whole dorsum of the hand: Composite skin grafting over acellular dermal matrix versus thick split-thickness skin grafting.

Preservation and restoration of hand function after burn injuries are challenging yet imperative. This study aimed to assess the curative effect of a composite skin graft over an acellular dermal matrix (ADM) and a thick split-thickness skin graft (STSG) for treating deep burns on the hand. Patients who met the inclusion criteria at the First Affiliated Hospital of Wenzhou Medical University between September 2011 and January 2020 were retrospectively identified from the operative register. We investigated patient characteristics, time from operation to the start of active motion exercise, take rates of skin graft 7 days post-surgery, donor site recovery, complications and days to complete healing. Patients were followed up for 12 months to evaluate scar quality using the Vancouver Scar Scale (VSS) and hand function through total active motion (TAM) and the Jebsen-Taylor Hand Function Test (JTHFT). A total of 38 patients (52 hands) who received thin STSG on top of the ADM or thick STSG were included. The location of the donor sites was significantly different between Group A (thick STSG) and Group B (thin STSG + ADM) (p = 0.03). There were no statistical differences in age, gender, underlying disease, cause of burn, burn area, dominant hand, patients with two hands operated on and time from burn to surgery between the two groups (p > 0.05). The time from operation to the start of active motion exercise, take rates of skin graft 7 days post-surgery and days to complete healing were not significantly different between Group A and Group B (p > 0.05). The rate of donor sites requiring skin grafting was lower in Group B than in Group A (22.2% vs. 100%, p < 0.001). There were no statistically significant differences in complications between the groups (p = 0.12). Moreover, 12 months postoperatively, the pliability subscore in the VSS was significantly lower in Group A than in Group B (p = 0.01). However, there were no statistically significant differences in vascularity (p = 0.42), pigmentation (p = 0.31) and height subscores (p = 0.13). The TAM and JTHFT results revealed no statistically significant differences between the two groups (p = 0.22 and 0.06, respectively). The ADM combined with thin STSG is a valuable approach for treating deep and extensive hand burns with low donor site morbidity. It has a good appearance and function in patients with hand burns, especially in patients with limited donor sites.