Objective  To explore the relationship between social isolation and health behaviors and ulcer severity in patients with diabetic foot.

  Methods  A cross-sectional study was conducted with 160 patients suffering from type 2 diabetes mellitus combined with diabetic foot. The patients received treatment at the Department of Endocrinology and Metabolism, Nanfang Hospital, Southern Medical University between September 2020 and December 2021. Patient information was collected, including the scores for Lubben Social Network Scale and the Wagner classification of foot ulcers. Analysis was conducted to study the characteristics of the patients’ health behaviors, including whether they received information and education on diabetic foot, whether there were delays in their attempt to access medical service, the frequency of foot examinations, etc. In addition, patient demographic data were collected, including sex, age, education, and employment status. According to their scores for Lubben Social Network Scale, the patients were divided into a social isolation group (n=60) and a non-social-isolation group (n=100). The severity of the foot ulcers and the health behaviors of the two groups were compared to identify differences.

  Results  The findings suggest that, compared with the non-social-isolation group, the social isolation group had a higher proportion of diabetic foot patients with Wagner grade 3-5 diabetic foot ulcers (P<0.05). Analysis of the health behaviors showed that the social isolation group had a higher proportion of diabetes foot patients who had never undergone examination of their feet and those who had delayed attempts to access medical service for their condition (P<0.05). There were no significant differences between the two groups in terms of whether the patients had received information and education concerning diabetic foot, causes of foot injury, self-treatment of wounds, smoking, and drinking. Correlational analysis suggested that the scores of Lubben Social Network Scale were negatively correlated with the delayed attempts to access medical service (r=−0.353, P=0.001), that is, the higher the degree of social isolation, the longer the delay in patients’ attempt to access medical service for their diabetic foot.

  Conclusions  Social isolation is correlated to health behaviors and ulcer severity in patients with diabetic foot. Giving more attention to the problem of social isolation of diabetic foot patients and increasing their ties with the social environment and the members of their social network may have a positive effect on improving the delays in diabetic foot patients’ attempt to access medical service, which is particularly important for follow-up treatment.