Abstract

A diabetic foot ulcer (DFU) is a complication of type 2 diabetes that is difficult to treat. Buerger-Allen exercise has shown effectiveness in improving foot circulation and neuropathy in several studies; however, to the best of our knowledge, no randomised controlled study has investigated its effectiveness for DFU healing. Therefore, this study aimed to assess the effects of Buerger-Allen exercise on the healing of DFUs in patients with type 2 diabetes. This is a parallel-group randomised controlled trial (RCT). Of 50 patients with neuropathic DFUs, 41 completed the study. They were assigned randomly to a study group (n=21) and a control group (n=20). Patients in the study group received the standard medical treatment and semi-supervised Buerger-Allen exercise for three sessions per week for four weeks, while patients in the control group only received the standard medical treatment. The outcome measures were: ankle-brachial pressure index (ABPI); ulcer size; ulcer depth; SINBAD score; and ulcer risk for poor outcomes (based on the SINBAD score). The study group's mean age was 49.48±6.45 years and the control group's mean age was 49.15±5.85. The study group's ABPI increased significantly compared to the baseline (1.17±0.04 versus 1.11±0.05, respectively; p<0.001) and the control group (1.17±0.04 versus 1.14±0.05, respectively; p=0.04) post-intervention. Ulcer size also reduced significantly in the study group compared to the baseline (2.63±2.0 versus 7.48±5.55cm2, respectively; p<0.001) and the control group (2.63±2.0 versus 6.43±4.45cm2, respectively; p<0.001) post-intervention. Ulcer depth decreased significantly in the study group compared to the baseline (1.71±1.05 versus 4.19±1.74mm, respectively; p<0.001) and the control group (1.71±1.05 versus 2.80±1.57mm, respectively; p=0.01) post-intervention. Furthermore, the SINBAD score in the study group decreased significantly compared to the baseline (1.38±0.86 versus 2.14±1.06, respectively; p<0.001) and the control group (1.38±0.86 versus 2.0±0.79, respectively; p=0.02) post-intervention. Moreover, the ulcer risk for poor outcomes, based on the SINBAD score, reduced significantly only in the study group, compared to the baseline (p=0.041). The control group showed non-significant changes compared to the baseline in all outcome measures (p>0.05). From the findings of this RCT, Buerger-Allen exercise, in combination with standard wound care, may help accelerate the healing of neuropathic DFUs in patients with type 2 diabetes, and could be suggested as part of the management plan for such conditions as an easy-to-perform offloading exercise intervention.

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