• Humans can tolerate occlusion of one vertebral artery well.
  • Usual vertebral artery lesion seen is atherosclerotic stenoses of both vertebral origins.
  • Surgeries for vertebral artery obstruction are transection and reimplantation to subclavian or carotid, vertebral endarterectomy and vein patch angioplasty. Surgery has high morbidity.
  • Vertebral artery stenting gives good results in both short and long term and has lower morbidity compared to surgery. PTA alone without stenting is not done as PTA alone is accompanied by considerable recoil as the commonest site of vertebral stenosis is at its origin from the subclavian artery.