Purpose：We investigated the factors associated with medical device-related pressure ulcer (MDRPU) due to lower extremity orthosis in patients undergoing convalescent rehabilitation for stroke.Methods：This retrospective study included patients with stroke who wore ankle foot orthosis in the convalescent rehabilitation ward. We measured the following items at admission：Brunnstrom recovery stage, presence of sensory disturbance, exhibition of unilateral spatial neglect, functional independence measures at admission and discharge, and presence of MDRPU. In the statistical analysis, logistic regression analysis was performed to identify the significant factors associated with MDRPU.Results：Ninety-five participants were enrolled in this study (mean age：54.9 ± 11.6 years, Male：78.9%). In logistic regression analysis, Age (odds ratio＝1.05, 95% confidence interval＝1.01-1.10, p＜0.05) and the presence of sensory disturbance (odds ratio＝5.17, 95% confidence interval＝1.39-19.28, p＜0.05) at admission was extracted as the cause of MDRPU.Conclusion：Sensory disturbance at admission is associated with MDRPU in patients undergoing convalescent rehabilitation for stroke who wear ankle foot orthosis.