I Believe that you should consider researching reliable reference websites that provide information about surgeries and other medical procedures on search engines (like Google). They are used to dealing with questions like yours.

I looked on Google for some good examples for you and I ended up finding good references.

Here is one of them: http://www.surgery.com

Take wikipedia into consideration as well =)

I placed here one with doctor reviewed content, but you can surely find other pages with the same intent. I'm just trying to help, guiding you to the right place.

Hope it helps!