His road to recovery has been a long difficult one.
RELATED: South San Francisco cop injured in skateboard attack ID'd as 12-year veteran
On Thanksgiving Day 2016, motorcycle Officer Robby Chon was in downtown South San Francisco doing traffic enforcement.
A Starbucks worker waved him down, saying a man, later identified as Luis Ramos-Correras, was causing problems.
As Officer Chon spoke to him, the suspect suddenly darts down the street on his skateboard.
Grainy security video shows Officer Chon chasing the suspect, who turns and strikes the officer with his skateboard.
EXCLUSIVE: ABC7news interviews South City Officer who was attacked by a skateboarder .. causing near fatal head injuries. Ofc. Robby Chon’s long journey toward recovery. pic.twitter.com/z1msfvSBgT— Vic Lee (@vicleeabc7) April 10, 2019
Another video shows Ramos-Correras running down a side street with another officer in pursuit.
He was arrested and later convicted on assault and other charges.
Officer Chon told ABC7's Vic Lee on Wednesday that he has no recollection of the attack.
"I only know this because I actually happened to see it on the news and saw the video."
The doctor told him at the hospital, it was touch and go.
"He said I had a matter of minutes left of life so he had to do emergency surgery right away."
FULL VIDEO: Police say South San Francisco officer in critical condition after skateboard assault
And there were more surgeries after that and lots of physical therapy for more than a year.
The skateboard had crushed his head.
"I had no skull for about six months. So I had to be very careful walking around," Chon said.
His injured brain caused double vision, difficulty walking and loss of short term memory.
Chon says he was able to get through the tough times because of all the support he received.
"A lot of people from my work, the police department, the community, my church group..."
That included a vigil attended by hundreds of people in front of the South San Francisco Police Department.
In January of last year, the 12-year veteran cop returned to work -- but on desk duty.
It was a far cry from being on the streets, riding his beloved bike.
"Oh definitely ...being on the street that was great!"
In January, Chon went on medical retirement.
The city was unable to clear him to go back into the field. Chon now has to look for other work.
He has a wife and two kids to support.
Now, as he looks back, "Regrets...that's hard to say....hard to say. If I let him go, could someone else have been injured by him? Possibly. Possibly not. I don't know...."
What Chon does know is that he followed his instincts as a cop.
He was just doing his job.