So, I remember learning about this method for a split second in the 6th grade (1997). I can only remember that the chest was cut, exposing the sternum and lungs(?). Causing extreme pain and certain death if the victim took a deep breath. Essentially, it was death by strangulation while being tied up. I can't remember why I thought about it, but any help would be appreciated. Thanks!
You might be thinking of the idea of the "blood eagle", which (if it happened) would have somewhat resembled that? More could be pried out of someone, but you might like to start with 'What are the chances the Vikings actually used the "Blood Eagle"? (previous highly rated answer has been deleted and other posts just link to the deleted answer)' by /u/mikedash .
This is not to discourage discussion. More questions, data, and debate are always welcome.
No, I don't believe that was it. I should of asked my question a bit more specific. I'm sorry. I want to think that it was explained that the accused (or guilty) was strung or crusified and then cut open. I'm sorry I wish I could give more of an explanation. I remember "bufferfly" was part of the name? I think.
I think what you're referring to is close, but I believe the process was done during the Crusades.