The authorised officer suffered chest and rib injures and also received medical treatment.
Yesterday Inspector Greig said the senior constable would require surgery for the eye socket fracture and ongoing dental care for a broken tooth.
"We hope to be able to interview him over the weekend but as you can imagine he is very sore."
The investigation into the incident was ongoing and it was likely the prisoner would face charges in relation to the attack, he said.
"At this stage we are still gathering evidence prior to making any decisions around charges. We don't know when the senior constable will be able to return to work, it may be some weeks."
The authorised officer had a follow-up appointment with his GP yesterday and, suffering very sore ribs, he was not expected back at work until after Boxing Day, he said.
"We are continuing to support both members and their families."
Wednesday wasn't the first time Walker was jailed for burglary.
In 2012 he was sentenced to two years and three months' imprisonment after admitting five domestic burglaries relating to the plundering of people's homes throughout Napier.
When confronted by the one of his victims, from whose home he fled with a foot badly gashed on a broken window, he pleaded not to be given a hiding and said he burgled the house because he had drug debts with the Mongrel Mob.
In a police interview he admitted he had been targeting laptop computers, to trade for "tinnies'' of cannabis.
A police summary said Walker would walk the streets, and whenever he spotted insecure or partly open windows he would investigate, and burgle the houses if no one was home.