Bone and soft tissue infections in patients with diabetic foot

Bone and soft tissue infection involving the foot is a serious complication of diabetes mellitus and represents a major public health and socioeconomic burden to National Health Services worldwide. Research in the past decade has improved diagnosis and treatment of these frequent and potentially devastating complications of diabetic foot which often remain difficult to be diagnosed and treated despite the availability of various clinical, serological, and imaging modalities. Furthermore, neuropathic osteoarthropathy can share many clinical and imaging features of osteomyelitis, and infection is often superimposed in patients with neuropathic disease. Thus, distinguishing between the two abnormalities is further complicated. Although the reference standard for diagnosis remains microbiologic analysis of bone specimens, in most clinical practice, soft tissue and bone infection involving the diabetic foot is diagnosed solely on the basis of a combination of clinical evaluation, serum inflammatory markers, and imaging modalities. Correlation between imaging findings and clinical features is very important as well as a common knowledge base for treatment team members rather than a compartmentalized view. Thus, the primary purpose of this review article was to provide radiologist and clinician with important clinical knowledge and relevant radiological semiotics, respectively, in order to facilitate a prompt diagnosis and personalised treatment of diabetic foot infections.