Comparison of Outcomes in Below-Knee Amputation Between Vascular, General, and Orthopedic Surgeons.

General surgeons (GS), orthopedic surgeons (OS), and vascular surgeons (VS) can perform below-knee amputation (BKA) operations. We compared the outcomes of BKA patients among the three specialties. Adult patients who underwent a BKA were identified from the 2016-2018 National Surgical Quality Improvement Project database. Statistical data for orthopedic and vascular BKA cases were then compared with GS cases using logistic regression analysis. Outcomes included mortality, length of hospital stay, and complications. There were 9619 BKA cases. VS had the highest volume of BKA with 58.9% of the cases, compared to GS at 22.9% and OS at 18.1%. 4.4% of general surgery patients had severe frailty compared to OS (3.3%) and VS (3.4%, P < 0.001). VS has the lowest rates of emergency cases (11.9% versus 16.1 for GS versus 15.8% versus OS) and the most favorable wound classification (38.3%, versus 48.7% for GS and VS). Peripheral vascular disease was notably highest in VS (34.0% versus. 20.6% for GS and 9.9% for OS, P < 0.001). Compared to GS, VS was more likely to have a prolonged length of stay (odds ratio) (OR)(1.409), 95% CI 1.265-1.570) while OS was less likely (OR 0.650, 95% CI 0.561-0.754). OS had a lower risk of complications (OR 0.781, 95% CI 0.674-0.904). Mortality was not significantly different among the three specialties. The National Surgical Quality Improvement Project retrospective analysis of BKA cases suggested that mortality was not statistically different when performed by VS, GS, and OS. There were fewer overall complications when OS performed a BKA, but this is more likely a result of operating upon a generally healthier patient population with lower incidence of preoperative comorbid conditions.

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