A teenager faces a string of serious charges after he allegedly kicked a NSW Police officer in the face during an arrest in Sydney.
The 37-year-old officer has a "long road to recovery" ahead, police say, after he hit his head hard as he fell onto the pavement.
The father of two, who's now in a stable condition, was among three officers allegedly injured by the 16-year-old boy while trying to detain him at Marsfield on Monday night, Detective Superintendent John Duncan told reporters on Tuesday.
"He's conscious but it is going to be a long road to recovery," Det Supt Duncan said.
Police were called to the area after reports a group of youths assaulted two security guards at Macquarie shopping centre, he said.
The 16-year-old was approached by a dog squad officer at a nearby intersection about 10pm and allegedly became agitated, with four officers needed to detain the boy.
The teen then allegedly kicked the 37-year-old in the face, causing the officer to hit his head on the pavement.
The boy was charged late on Tuesday with causing grievous bodily harm to a police officer, assaulting an officer, affray, resisting arrest, two counts of common assault and using offensive language.
He was refused bail and is expected to appear at a children's court on Wednesday.
Det Supt Duncan spoke to the officer on Tuesday afternoon and said their thoughts went out to his wife and two young sons, both under five.
"Policing is a dangerous job, it can be violent, it can be unpredictable," he said.
"He's a lovely young officer ... our thoughts and best wishes are with him and his speedy recovery," he said.
Police are still looking for others involved in the earlier incident at Macquarie shopping centre.