Charcot neuropathic osteoarthropathy (CNO) is a condition that develops in the presence of neuropathy, most commonly diabetes-related neuropathy. Owing to the neuropathy, microtrauma to the bones occur without the individual feeling them. With continued walking, bone inflammation, resorption, microfractures and structural changes occur in the bones, which result in irreversible deformities. Diagnosing this condition is often difficult and requires advanced imaging techniques, such as scintigraphy or magnetic resonance imaging, as X-ray changes may not be specific. Treatment of CNO includes immobilization, offloading, recalcification (supplementation of vitamin D and calcium) and in the most advanced cases, surgical treatment. This narrative review aims to synthesize the recent research and clinical implications relating to Charcot foot to help healthcare professionals to stay up-to-date in this relevant topic.

• Publication type
• Journal Article MeSH
• Review MeSH

Aim: To describe the demographic and clinical characteristics of patients with Charcot neuro-osteoarthropathy (CNO) and to examine for differences between participants with Type 1 diabetes mellitus (DM) (T1DM) and Type 2 diabetes mellitus (T2DM). Materials and Methods: Multicenter observational study in eight diabetic foot clinics in six countries between January 1, 1996, and December 31, 2022. Demographic, clinical, and laboratory parameters were obtained from the medical records. Analyses were performed using parametric or nonparametric statistical tests for variables with normally or nonnormally distributed values, respectively. Comparisons of the qualitative data were performed using the chi-square test. Results: Seven hundred seventy-four patients with DM and CNO were included. The mean age at diagnosis of CNO was 54.5 ± 11.7 years, and the median (interquartile range (IQR)) diabetes duration at diagnosis of CNO was 15 (10-22) years. Among participants, 71.8% (n = 546) were male and 83.2% (n = 634) had T2DM. Neuropathy was present in 91.7% (n = 688), retinopathy in 60.2% (n = 452), and nephropathy in 45.2% (n = 337). Subjects with T1DM, compared to T2DM, were diagnosed with CNO at a younger age (46.9 ± 11.0 vs. 57.9 ± 10.2 years, p < 0.001), had longer diabetes duration (median value (IQR): 29.0 (21.0-38.0) vs. 14.0 (8.0-20.0) years, p < 0.001), and had more often microvascular complications (neuropathy, 95.2% in T1DM vs. 87.4% in T2DM, p = 0.006; retinopathy, 83.3% vs. 55.4%, p < 0.001; and nephropathy 67.5% vs. 40.5%, p < 0.001). Conclusions: CNO is predominant in males, occurs in long-standing DM, and is often accompanied by microvascular complications. People with T1DM, compared to those with T2DM, are affected at a younger age, have longer diabetes duration, and have more often microvascular complications.

• Keywords
• Charcot joint, arthropathy neurogenic, diabetes mellitus Type 1, diabetes mellitus Type 2,
• MeSH
• Diabetes Mellitus, Type 1 * complications   epidemiology   MeSH
• Diabetes Mellitus, Type 2 * complications   epidemiology   MeSH
• Diabetic Neuropathies * epidemiology   MeSH
• Adult MeSH
• Middle Aged MeSH
• Humans MeSH
• Arthropathy, Neurogenic * epidemiology   diagnosis   etiology   MeSH
• Aged MeSH
• Check Tag
• Adult MeSH
• Middle Aged MeSH
• Humans MeSH
• Male MeSH
• Aged MeSH
• Female MeSH
• Publication type
• Journal Article MeSH
• Multicenter Study MeSH
• Observational Study MeSH