Arterial wall get damaged due to disease and leads to plaque formation in the wall which slows down and in due course obstructs blood flow completely.
Endarterectomy is a surgical procedure which involves opening the the diseased vessel , removing the paque and repairing the vessel primarily. On occasion it may not be possible to repair the vessel primarily and a bit of another vessel ( artery or vein) is used to to a patch repair.
There are no special risks associated with this repair and enables excellent blood flow restoration unlike in a balloon angioplasty alone
Patch Repair