[KDubRN]

He's much bigger than she. If he wrestled her down, and got on her back to hold her down, and cut off her air, there seems little or nothing she could do to defend herself.

Don't forget the fractured femur. That is a large bone. A break in that bone would take trauma. The femur is not an easy bone to break.

[T'wit]

We don't know when the traumas occurred. There seems at least some reason to suppose she was beaten up before her supposed "collapse." She was seen to be unusually bruised. She was unhappy, ready to get a divorce despite her religious views. My best guess is, she may have received other trauma at some earlier time, but not the fractured femur.

On the fateful night, the police officer said there was no sign of a big physical fight. Nor did Terri have obvious signs of physical beating that night (that we know of).

We do have the occipital fracture, rigid neck and probable bruises to the throat. The first two would not have been visible to the police officer, maybe the third, especially if she was face down. Those injuries suggest that Michael was on top of her, holding her down while pulling up on her neck (possibly with his forearm) and putting great pressure on the back of her head. This would account for everything except the fractured femur. That could have been twisting her leg when she went down, or him kneeling on her thigh with all his weight as he held her.

Does this make sense to you?