"You need to understand an autopsy is only to establish cause of death, it would not look at other issues such as abuse."
I beg to differ. The autopsy first is and examination, collection archival material and documentation of the body. Once this is done the cause of death is deduced from the evidence gathered and added together.
Do a google search of autopsy steps. Some of the sites are not for the faint of heart but do include usful info on the procedure.
I need some coffee now, to think this out more.