Understanding risk factors and prognosis in diabetic foot ulcers

Abstract

Diabetic foot ulcer (DFU) is a severe and prevalent complication of diabetes mellitus, posing substantial risks to patient health and increasing healthcare burdens globally. These chronic wounds often result from a complex interplay of factors, including neuropathy, ischemia, infection, immune dysregulation, and vascular dysfunction, leading to significant morbidity and, in severe cases, amputation. Effective management of DFUs necessitates a comprehensive understanding of their risk factors and prognostic indicators. This review provides an in-depth examination of the various risk factors and prognostic markers associated with DFUs, integrating insights from cellular mechanisms, emerging biomarkers, omics-based research, serological studies, and clinical assessments. We explore the underlying biological processes, such as the impact of chronic hyperglycemia, oxidative stress, inflammation, impaired angiogenesis, and the role of the microbiome in DFU development. The role of serological markers, including inflammatory and glycemic indicators, in predicting DFU risk and progression is discussed. Additionally, clinical markers and advanced assessment tools, such as ulcer grading systems and imaging technologies, used to evaluate DFU severity and healing are reviewed. By synthesizing these diverse perspectives, this review aims to offer a holistic view of DFU management, highlighting how understanding the interplay of risk factors and prognostic markers can lead to improved prevention strategies and personalized therapeutic interventions.

Keywords: diabetic foot ulcers; prognostic markers; risk factors; wound healing.

Figure 1

Core pathogenic axis of DFUs.