The iliac artery is a very important artery for blood flow to the legs. The human heart uses this iliac artery as a direct lane down to your legs. This blood is important to keeping your legs working properly. Oxygen, energy and various other life giving compounds are in that blood. The blood is also a major part of your immune system.
Iliac artery angioplasty is sometimes used to keep blood flowing to the legs. In angioplasty a balloon is inserted into an artery that is clogged partially or completely. The balloon is then inflated to open the artery up. This is used to start blood flow again. After the balloon opens the clog, a stint is put in to keep the area pried open.
Many heart stints go up through the leg through this area. This is a procedure that has saved thousands of lives.