Above-knee amputation (AKA) is typically a last-resort procedure in patients who are not candidates for limb salvage. Unplanned reoperation has been identified as a risk factor for increased morbidity and hospital readmission after vascular surgery.¹ The objective of this study was to evaluate risk factors for unplanned reoperation after AKA.

A retrospective review was performed that included all patients who underwent 1 or more AKA by the vascular surgery service at 2 hospitals from January 1, 2013, to December 31, 2015. The level of amputation was determined by clinical examination, because adjunctive measures of tissue perfusion (ie, transcutaneous oximetry) were not used by these centers during this period. Data collected included standard demographics and comorbidities, perioperative data, and postoperative outcomes.

膝上截肢术（AKA）通常是无法挽救肢体的患者的最后手段。计划外的再次手术已被确定为血管手术后发病率增加和医院再次入院的危险因素。¹这项研究的目的是评估AKA后计划外再次手术的危险因素。

进行了回顾性审查，纳入了从2013年1月1日至2015年12月31日在2家医院接受血管外科手术的所有AKA≥1的患者。截肢水平是通过临床检查确定的，因为组织的辅助措施在此期间，这些中心未使用灌注（即经皮血氧仪）。收集的数据包括标准的人口统计学和合并症，围手术期数据和术后结果。