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Seasonality variation of amputations in a university hospital from Monterrey, Mexico (2009-2012)

Background: The amputation of an extremity is a main complication of Diabetes mellitus. Worldwide the prevalence of amputations associated with diabetes mellitus is variable and had a considerable impact in the quality of life. Objective: Analyze the frequency of amputations in the University Hospital, Dr José E González and evaluate if a seasonal pattern is present. Method: A retrospective analysis from 2009 to 2012 was carried out. Clinical files of diabetic patients undergoing to amputation were studied. The seasonality was evaluated with a chi square goodness of fit. Results: A total of 456 amputations were studied. Results shown that February was the month with highest frequency of amputations while winter was the annual season with highest frequency of amputations. Conclusions: Amputations of diabetic patients from Metropolitan Monterrey Mexico show a seasonal pattern being the winter months those that present highest frequency.