Did you know there was such a thing? I didn't until yesterday, but it looks really cool! One of their current exhibits is about Surgicogenomics, and an upcoming show focuses on the public perception and dichotomies surrounding plastic surgery. They have collections of medical artifacts, fine art and manuscripts; and a robust education program featuring self-guided tours, amputation demonstrations, and lessons on various surgical instruments.
The descriptions of the IMSS remind me a bit of the famed Mutter Museum in Philadelphia, which (if you've never been, and you should go!) is full of all kinds of medical history, oddities, ephemera and accoutrement - currently including Einstein's brain!
I plan on checking out the IMSS next time I'm in Chicago, particularly because of my increasing interest in the connection between medicine and the humanities.