To evaluate the risks of venous thrombosis events for the hip fracture patients with therioma.

A retrospective review and paired comparison was applied in this study, patients with hip fracture were retrieved between June 2011 through June 2017. Patients with hip fracture and therioma were included into the experimental group (therioma group) and patients with hip fracture but no therioma were included into fracture group and were matched with therioma group according to the following parameters and weight: (1) anticoagulant/antiplatelet medications; (2) underlying conditions; (3) body mass index; (4) gender; (5) age, aiming to increase the strength of comparison. Caprini score and accumulation score of venous thrombosis events after surgery were compared using Wilcoxon rank test.

Thirty-one hip fractures with therioma were retrieved during 6 years, and 22 of them were qualified as therioma group. One thousand and twenty cases with hip fractures but without therioma were also retrieved, and 22 of them were selected and matched with the therioma group according to the above mentioned parameters and weight. These 22 cases were defined as the fracture group. As for the Caprini score, the therioma group was statistically higher than the fracture group (t=30.702, P=0.003). Incidence of DVT after surgery in the therioma group was 8/22 (36.4%) and incidence of PE was 5/22 (22.8%), 3 died. Incidence of DVT was 1/22 (4.5%) and no PE occurred in the fracture group. Altogether, incidence of VTE of two groups was statistically different (t=50.211, P=0.012).

Patients with hip fracture and therioma has significantly higher incidence of VTE and severity than those without therioma.