yes, the rite of the blood eagle. gruesome. but reading up on it, some doubt that it actually existed, or was dreamed up by the vikings terrorized victims.
when you read it, doesnt seem medically possible.
The only thing is there are some references in Norse sagas and Skaldic poetry. I believe it is medically possible albeit quickly fatal due to blood loss or shock.
http://www.orkneyjar.com/history/vikingorkney/bloodeagle.html