It is not the location of the wound I find interesting.
It is the changes in stories of what caused the wound.
I am very skeptical of “The Pakistani Interior Ministries” reports.
Since there was no autopsy done at the hospital, and many different people reporting what they saw or heard, I'm not too surprised that the story has changed several times; that's pretty normal in such confusing circumstances.
I don't trust the Pakistani Interior Ministry either, but I see no reason why they would try to hide the immediate cause of death. (They might well try to hide any government incompetence or co-operation with al Qaeda or other terrorist groups, even if it involved only lower-level officials and not Musharraf or any of his close associates).