UC Irvine

Objectives

The influence of race or ethnicity on limb loss after traumatic vascular injury is unclear. We sought to determine whether there were racial differences in rates of amputation between American Indians, blacks, Asians, and Hispanics compared to white patients following arterial axillosubclavian vessel injury (ASVI), femoral artery injury (FAI), or popliteal artery injury (PAI). As black race has been identified as an independent prognostic factor for postsurgical complication in trauma-associated lower extremity amputation, we further hypothesized that black race would be associated with a higher risk for limb loss after arterial ASVI, FAI, and PAI injury in a large national database.

Methods

The National Trauma Data Bank was queried for patients ≥16-years-old with arterial ASVI, FAI, or PAI to determine the risk of arm, above knee amputation (AKA), and below knee amputation (BKA), respectively. Covariates were included in separate multivariable logistic regression models for analysis. The reference group included white trauma patients.

Results

From 5,683,057 patients, 21,843 were identified with arterial ASVI, FAI, or PAI (<0.4%). For arterial ASVI, American Indian race was associated with higher risk for upper-extremity amputation as compared to white race (OR = 5.10, CI = 1.62-16.06, p < 0.05). For FAI, black race was associated with (OR = 0.66, CI = 0.49-0.89, p < 0.05) a lower risk of AKA, compared to white race. For PAI, race was not associated with risk for BKA.

Conclusion

Black race is associated with a lower risk of AKA after FAI, compared to whites. Race was not associated with a risk for limb loss after PAI. Future prospective studies examining socioeconomic factors and access to healthcare within this patient population is warranted to identify barriers and areas of improvement.