The choice of single bone flap TTT and double bone flaps TTT to treat severe diabetic foot ulcer: a clinical exploration

Aims This study aimed to compare the differences between single and double flap TTT (hereafter, sTTT and dTTT, respectively) for treatment of severe chronic diabetic foot ulcer in terms of biomechanics, safety, and efficacy. Methods The retrospectively conducted clinical study analyzed the basic epidemiological data, therapeutic effect, and safety of patients in the sTTT and dTTT cohorts. Results The clinical results showed that the operation time of sTTT was significantly longer than that of dTTT (p = 0.001). The mean healing time was 32.1 ± 3.9 and 29.7 ± 1.7 weeks in the sTTT and dTTT groups, respectively (p = 0.532). There was no significant difference in foot microcirculation indicators and VAS between the two groups at 12 months after the operation, but the complication rate of sTTT was significantly higher than that of dTTT (p < 0.001). Conclusion Both dTTT and sTTT can effectively treat severe chronic diabetic foot ulcers. However, the operation time of dTTT is shorter and safer.