How arteriosclerosis became a pain in the butt

An elderly patient's pain was due to a blockage in a branch of the internal iliac artery, a case report says
lower back pain

Consider a vascular cause when patients present with exertional buttock pain, say Japanese authors who report a case of gluteal arteriosclerosis in an elderly patient.

The 89-year-old man presented with a three-day history of pain in the left buttock whenever he moved.