• Mohamad A Hussain, Mohammed Al-Omran, Konrad Salata, Atul Sivaswamy, Thomas L Forbes, Naveed Sattar, Badr Aljabri, Ahmed Kayssi, Subodh Verma, and Charles de Mestral.
• Divisions of Vascular Surgery (Hussain, Al-Omran, Salata, de Mestral) and Cardiac Surgery (Verma), St. Michael's Hospital; Li Ka Shing Knowledge Institute of St. Michael's Hospital (Al-Omran, Verma, de Mestral); Department of Surgery (Hussain, Salata, Forbes, Kayssi), University of Toronto; Diabetes Action Canada (Hussain, Al-Omran, Salata, Forbes, Kayssi), Toronto, Ont.; King Saud University-Li Ka Shing Collaborative Research Program (Aljabri, Verma) and Department of Surgery (Aljabri), King Saud University, Riyadh, Kingdom of Saudi Arabia; ICES (Sivaswamy, de Mestral); Division of Vascular Surgery (Forbes), Peter Munk Cardiac Centre, University Health Network, Toronto, Ont.; Institute of Cardiovascular and Medical Sciences (Sattar), University of Glasgow, Glasgow, Scotland, United Kingdom; Division of Vascular Surgery (Kayssi), Sunnybrook Health Sciences Centre, Toronto, Ont.
• CMAJ. 2019 Sep 3; 191 (35): E955-E961.

BackgroundThe evolving clinical burden of limb loss secondary to diabetes and peripheral artery disease remains poorly characterized. We sought to examine secular trends in the rate of lower-extremity amputations related to diabetes, peripheral artery disease or both.MethodsWe included all individuals aged 40 years and older who underwent lower-extremity amputations related to diabetes or peripheral artery disease in Ontario, Canada (2005-2016). We identified patients and amputations through deterministic linkage of administrative health databases. Quarterly rates (per 100 000 individuals aged ≥ 40 yr) of any (major or minor) amputation and of major amputations alone were calculated. We used time-series analyses with exponential smoothing models to characterize secular trends and forecast 2 years forward in time.ResultsA total of 20 062 patients underwent any lower-extremity amputation, of which 12 786 (63.7%) underwent a major (above ankle) amputation. Diabetes was present in 81.8%, peripheral artery disease in 93.8%, and both diabetes and peripheral artery disease in 75.6%. The rate of any amputation initially declined from 9.88 to 8.62 per 100 000 between Q2 of 2005 and Q4 of 2010, but increased again by Q1 of 2016 to 10.0 per 100 000 (p = 0.003). We observed a significant increase in the rate of any amputation among patients with diabetes, peripheral artery disease, and both diabetes and peripheral artery disease. Major amputations did not significantly change among patients with diabetes, peripheral artery disease or both.InterpretationLower-extremity amputations related to diabetes, peripheral artery disease or both have increased over the last decade. These data support renewed efforts to prevent and decrease the burden of limb loss.© 2019 Joule Inc. or its licensors.

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