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Published on: March 3, 2023
Charcot foot in a Hong Kong Chinese diabetic population
1Department of Orthopaedics and Traumatology, Queen Mary Hospital, Pokfulam, Hong Kong. adrianleunghb@yahoo.com
Insights
Charcot foot is uncommon in Hong Kong Chinese diabetic patients, often presenting late with superimposed infection. Late presentation is linked to recurrent ulcers and a concerning mortality rate.
Area of Science:
- Diabetology
- Podiatry
- Epidemiology
Background:
- Charcot foot is a serious complication of diabetes mellitus.
- Understanding its epidemiology is crucial for patient management and service planning.
Purpose of the Study:
- To determine the epidemiology of Charcot foot in Hong Kong Chinese diabetic patients.
- To establish baseline data for service benchmarking.
Main Methods:
- Retrospective cohort study.
- Involved comparing clinical presentations of diabetic patients with Charcot foot against age- and sex-matched controls.
- Data collected between 1995 and 2007.
Main Results:
- Twenty-five cases of Charcot foot identified over 12 years.
- Mid-foot involvement (64%) and superimposed infection (61%) were common.
- Late presentation (33%) was associated with recurrent ulcers and a 5-year mortality of up to 33%.
Conclusions:
- Charcot foot is rare in this population.
- Delayed presentation and superimposed infection are significant factors.
- Patients with Charcot foot face risks of recurrent ulcers and increased mortality.
Objectives:
To delineate the epidemiology of Charcot foot in Hong Kong Chinese diabetic patients, and to provide baseline data for benchmarking the clinic service for this special group of patients.
Design:
Retrospective cohort study.
Setting:
Regional hospital, Hong Kong.
Patients:
Diabetic patients with Charcot foot and age- and sex-matched diabetic foot clinic attendees between 1995 and 2007.
Main Outcome Measures:
Clinical presentations were compared in patients with Charcot foot and the controls.
Results:
Twenty-five patients were diagnosed with Charcot foot over 12 years; 60% were male. At the time of diagnosis, the mean age was 59 (standard deviation, 14; range, 38-85) years, with diabetes being diagnosed for a mean of 11 (standard deviation, 8; range, 0-30) years. Retinopathy was noted in 36% (n=9) and nephropathy in 20% (n=5) of the Charcot foot patients. No patient had peripheral vascular disease. This finding was statistically significant. Delayed presentation occurred in 11 patients. Presentation was usually unilateral. In the minority (n=3, 12%) with bilateral involvement, presentation was sequential. Charcot arthropathy affected the mid-foot in 64% of the patients. Superimposed infection was common (61%). Recurrent ulceration occurred in 11%, all of whom presented late. Only one patient underwent major amputation, but the 5-year mortality of Charcot foot patients could be up to 33%.
Conclusion:
Charcot foot was uncommon in this population. Late presentation was common and might be related to superimposed infection; such patients were prone to recurrent ulcers.
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