Flexion 英 /'flekʃ(ə)n/
释义 n. 弯曲，弯曲状态；弯曲部分
例句 To achieve this, you have to have maximum ankle flexibility for good catch, and good knee flexion to maintain the range of motions. 为了达到这一点，你必须有极佳的脚踝灵活性去实现好的抓水，极佳的膝盖弯曲度去保持动作的幅度。
作者： Giovanni Spinella
期刊：J. Endovasc. Ther.
Popliteal artery aneurysms (PAAs) are the most frequently encountered peripheral aneurysms. In elective cases, open or endovascular treatment is often used when the aneurysm reaches 2 cm in diameter. Results of endovascular treatment were initially disappointing, likely due to the materials used in the first generation of devices, and while it continues to demonstrate lower patency rates compared with open repair using prosthetic materials or autologous vein, endovascular PAA repair is now indicated in selected cases. In particular, it is often used in the absence of arterial tortuosity and off-target area dilatation and when treating patients with at least 2 runoff vessels and proximal and distal stent-graft landing zones of at least 15 mm. However, clinical outcomes even in these selected patients are far from perfect, and treatment failures are often attributed to the severe repetitive deformations experienced by the femoropopliteal (FP) segment during limb flexion. These deformations can lead to kinking and compression of the endovascular device, contributing to thrombosis, stent fracture, and ultimately treatment failure. These considerations call for a quantification of the in vivo behavior of the FP arteries during limb flexion after endovascular aneurysm repair.