Stenosis or occlusion of lower extremity arteries, particularly lesions of the common femoral or N artery, usually across the hip or knee. Conventional interventional techniques, including endovascular laparoscopy or subendovascular angioplasty to open the diseased vessel followed by balloon dilation, can achieve recanalization of the diseased artery without stenting. However, in a few cases, after balloon dilation of the diseased segment of the artery, a >50% residual stenosis is formed because of the elastic retraction of the vessel wall or the entrapment of the atherosclerotic plaque on the intima of the artery that occurs by mechanical compression and tearing during balloon dilation. If a stent is not implanted, because there is >50% residual stenosis, the improvement of ischemic symptoms is often not obvious; if a stent is implanted, there is a risk of stent fracture during joint movement across the joint, and then restenosis or even occlusion in the stent. What should I do then? 1. Usually, doctors are cautious about the implantation of intra-arterial stents across the joints, and if a residual stenosis of >50% is formed due to the elastic retraction of the vessel wall or the formation of an interlayer caused by mechanical compression and tearing of the atherosclerotic plaque in the intima during balloon expansion, the doctor will use a larger balloon or extend the balloon expansion time to solve the problem. The doctor will use a larger balloon or extend the time of balloon dilation to solve the problem. If this still does not work, then only a stent can be implanted. However, after surgery, you must follow your doctor’s instructions to reduce excessive joint flexion in your daily life to avoid stent compression or fracture. 2. Recently, the Supera stent produced by IDEV in the United States has been placed into the artery across the hip or knee joint due to its unique weaving process.