News Watch

Lower-Limb Amputations Decrease in People with Diabetes

The rate of leg and foot amputations among U.S. adults ages 40 and older with diagnosed diabetes declined by 65 percent between 1996 and 2008, according to a study by the Centers for Disease Control and Prevention and published today in the journal Diabetes Care.

Age-adjusted nontraumatic lower-limb amputations occurred at a rate of 3.9 per 1,000 people with diagnosed diabetes in 2008 compared to 11.2 per 1,000 in 1996. Non-traumatic lower-limb amputations refer to those caused by circulatory problems that are a common complication among people with diabetes rather than amputations caused by injuries.

 "Declining Rates of Hospitalization for Nontraumatic Lower-Extremity Amputation in the Diabetic Population Aged 40 years or Older: U.S., 1988-2008," is published in the current online issue of Diabetes Care.

The study also found that among people with diagnosed diabetes in 2008, men had higher age-adjusted rates of leg and foot amputations than women (6 per 1,000 vs. 1.9), and blacks had higher rates than whites (4.9 per 1,000 vs. 2.9). Adults aged 75 years and older had the highest rate - 6.2 per 1,000 - compared to other age groups.

Authors note that improvements in blood sugar control, foot care and diabetes management, along with declines in cardiovascular disease, are likely to have contributed to the decline in leg and foot amputations among people with diagnosed diabetes.

"The significant drop in rates of nontraumatic lower-limb amputations among U.S. adults with diagnosed diabetes is certainly encouraging, but more work is needed to reduce the disparities among certain populations," said Nilka Ríos Burrows, M.P.H., an epidemiologist with CDC´s Division of Diabetes Translation and co-author of the study. "We must continue to increase awareness of the devastating health complications of diabetes. Diabetes is the leading cause of lower-limb amputations in the United States."

Researchers analyzed data from the National Hospital Discharge Survey on non-traumatic lower-limb amputations and from the National Health Interview Survey on the prevalence of diagnosed diabetes from 1988-2008. Researchers found that the decrease in lower-limb amputation rates was greater among people with diagnosed diabetes compared to those without diabetes. However, the rate in 2008 was still about eight times higher among people with diagnosed diabetes compared to those without it.

In addition to being the leading cause of nontraumatic lower-limb amputations, diabetes is the leading cause of kidney failure and new cases of blindness among adults, and the seventh leading cause of death in the United States. People with diabetes are at increased risk of other complications such as heart attacks, strokes and high blood pressure.

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Kanungo DasFebruary 15, 2012


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