Racial and ethnic amputation level disparities in veterans undergoing incident dysvascular lower extremity amputation.

Abstract

The choice of incident amputation level can have a profound effect on clinical outcomes. Amputations at the transmetatarsal (TM) or transtibial (TT) levels result in greater preservation of function and mobility, whereas transfemoral (TF) amputations typically result in a greater adverse impact. Prior investigations have explored racial/ethnic and regional variation in incident amputation level. This study overcomes some of the methodological limitations seen in prior research through the use of a large national, multiyear veteran sample and by including only those who have undergone an incident amputation. (1) Determine if there are national/regional differences in the frequency of incident TF amputation compared with TM and TT amputation, (2) Determine if race/ethnicity and geographic region are associated with incident TF amputation level, and (3) Determine if racial/ethnic disparities of incident TF amputation differ by the presence of diabetes or prior revascularization. Retrospective cohort study of veterans undergoing an incident dysvascular lower extremity amputation. One hundred ten Veterans Affairs (VA) Medical Centers. Seven thousand two hundred ninety-six Veterans undergoing incident unilateral dysvascular lower extremity amputation identified in the Veterans Affairs Surgical Quality Improvement Program (VASQIP) database (2005-2014). Not applicable. Incident amputation level. The White, Black, and Hispanic risk for an incident TF amputation was 31% (n=1356), 35% (n=810), and 46% (n=293), respectively. In the Continental region, Blacks who had not had a prior revascularization were more likely to undergo a TF amputation compared to Whites both with and without diabetes (odds ratio [OR]=1.4; 95% confidence interval [CI], 1.1, 1.9 and OR=1.5; 95% CI, 1.1, 2.1, respectively). In the Southeast region, Hispanics compared with Whites were at increased odds of undergoing a TF amputation, irrespective of a diabetes or a prior revascularization (ORs ≥ 2.9). Racial and ethnic disparities exist in choice of proximal compared with distal amputation in specific VA geographic regions.