What's novel about this theory is that JtheR was not necessarily a surgeon.
The above picture was put together from descriptions. There are some very detailed ones, among them one from when the suspected serial killer was admitted to prison.
Here is what his own lawyer said about him after he was executed:
"I have a statement to make," he said, "which may throw some light on this case. Now that Feigenbaum is dead and nothing more can be done for him in this world, I want to say as his counsel that I am absolutely sure of his guilt in this case, and I feel morally certain that he is the man who committed many, if not all of the Whitechapel murders. Here are my reasons, and on this statement I pledge my honor:
Read more at:
http://policegazette.us/FromTheMorgue_5-16-1896_Feigenbaum.htmland
http://www.bbc.co.uk/news/world-europe-14207581Cher