Mark Lundy has denied the killings.
During today's evidence, the 56-year-old sat quietly and listened carefully to what was being said.
Mr Oram told the court when he arrived at the crime scene on September 1, he took notes about Mrs Lundy's condition.
She was lying naked on her back on the bed. She suffered multiple cuts on her head, arms and hands, he said.
Her thumb was broken and there were "black bruises" on her left hand.
Mrs Lundy's torso was spattered with blood and skull fragments, Mr Oram said.
Everyone at the scene was wearing protective gear - "everybody within the scene was fully gowned, gloved, booties, hoodies and masks", Mr Oram said.
Mrs Lundy was then transferred in body bags onto two stretchers and carried out of the bedroom window to a waiting hearse outside.
Defence lawyer David Hislop said it must have been an "extremely bloody scene" and it must have been difficult to remove Mrs Lundy from her waterbed.
Mr Oram said a lot of care was taken in moving her because of the knowledge vital evidence would be on her body.
"The moving of Christine was done with all that in mind."
But the five people involved in moving her would have got blood on their gloves, he said.
Mr Oram also helped at the post mortem examination.
When he was removing one of the three gold rings from her hand, one of the rings "broke right in half".
The stomach contents were removed and Mr Oram noted there looked to be french fries as well as "crinkle cut" chips, such as those served at a fish and chip store.
The jury was also told today that paint fragments found embedded in the bones of Christine Lundy could have been on her head and picked up by a weapon as it was used on her, rather than the weapon being painted.
The Crown case was that fragments fell from the murder weapon, which was painted the same colours as Lundy's tools.
ESR scientists Susan Coulson said it was impossible to know how the fragments found squashed into Mrs Lundy's bones got there.
"If the weapon contacted the paint on the surface of the skin and went into the head, the weapon could have collected the paint on the way to making the injury."
The jury trial before Justice Simon France was adjourned today and will continue on Monday.