1. the steel underwear is a lead apron, to protect his private parts from the x-ray beam.
2. yes, the hidden heart (the doctor was looking for it).
3. don't know, i don't create that human model... but i will check this.
4. hmmm... i will fix this.
that his hand goes under the lead apron depends on the collision settings, but i will correct this blemish.
EDIT:
If you start the scene, the brain stays on his position and his right hip isn't dislocated...
Maybe he has a hard torture, before you x-rayed him?
(the doctor was looking for it).
