Abstract
The transverse tibial transfer technique is employed primarily to treat diabetic foot ulcers (DFUs), aiming to enhance leg circulation and promote new blood vessel growth. This technique is also beneficial for various conditions associated with poor blood flow in the lower extremities. However, there is no clear molecular mechanism to explain the relationship between the transverse tibial transfer technique and angiogenesis in patients with diabetic foot. This study aims to preliminarily explore the change of IL-6 and related cytokines in promoting angiogenesis during transverse tibial transplantation, providing a direction for future research. We retrospectively assessed a study from April 2022 to November 2023 on 76 patients with severe DFUs at Wagner stages 3-4. Flow cytometry was used to detect the levels of 12 cytokines in serum before the operation and 3, 7, 14, 21, and 35 days after the operation. Ankle-brachial index (ABI), transcutaneous oxygen tension (TcPO2), and glycosylated hemoglobin (Hba1c) were recorded at admission and discharge. We examined the variations in cytokine levels, wound healing duration, amputation rates, infection incidence, and other key outcomes. In our investigation, a total of 76 individuals participated, comprising 49 males and 27 females. These subjects had an average age of 64.7 years, with a standard deviation of 13 years. The mean ulcer healing time was 74 ± 31 days, amputation occurred in 3 patients, pin tract infection occurred in one patient (1.3%), and incision infection occurred in one patient (1.3%). By day 35 following the surgery, both the ABI and TcPO2 values showed a significant increase from their preoperative levels. HbA1c significantly improved compared with presurgery (p < 0.001), IL-6 levels were significantly increased compared with presurgery (p < 0.05), and then decreased. The transverse tibial transfer (TTT) technique is safe and efficient for managing DFUs. The wound healing time in patients who smoke or consume alcohol is statistically significant compared with that of nonsmoking and nondrinking patients. IL-6 exhibited substantial changes at various postoperative time points. Future research could investigate the role of IL-6 in tibial transverse translation.
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