Groot OQ, Hundersmarck D, Lans A, et al. - A retrospective propensity-score matched, case-control study at two academic and three community medical centers was conducted to evaluate the incidence of postoperative complications attributable to VI during anterior lumbar spine surgery (ALSS), and outcomes secondary to VI such as procedural blood loss, transfusion of blood products, length of stay (LOS), and in-hospital mortality. The incidence of postoperative complications attributable to VI, such as venous thromboembolism (VTE), compartment syndrome, transfusion reaction, limb ischemia, and reoperations was the primary outcome. The estimated operative blood loss (milliliter), transfused blood products, LOS (days), and in-hospital mortality were considered as secondary outcomes. A total of 1,035 patients were distinguished. The results of this study demonstrate a low number of serious postoperative complications related to VI in ALSS. Between the VI and matched non-VI ALSS cohort, these complications were not significantly different. Although not significant, during the postoperative course of these patients, the found DVT incidence of 2.7% after VI in ALSS needs vigilance and preventive measures.