But almost five years later, on Saturday afternoon Mr Pridham married his long-time girlfriend and his carer, Danielle Poulet.
Ms Poulet had only known Mr Pridham for three months before the assault and she has stuck by him ever since. The couple were sharing their happy ending to let others know there are good outcomes for people who have a disability.
Ms Poulet said when Mr Pridham popped the big question to then-Ms Poulet, it was pretty low key.
"I had to ask her dad if I could propose to her. I'm assuming he said yes."
Ms Poulet did say yes, and on Saturday the two were married in a Kambah church before enjoying a reception by Lake Burley Griffin. They described their big day as "amazing" and "inspiring".
Mrs Pridham had set up a GoFundMe page to help raise funds for their wedding but instead Canberra leapt into action, volunteering services for the big day.
"It was great. If it wasn't for them, we wouldn't be able to do this," Mrs Pridham said.
Mrs Pridham said you always hear the bad stuff when people are left disabled, but never the good news stories.
Mr Pridham's aunt, Lisa Willett, described the ceremony as "very emotional" and "lovely".
The pair will be travelling to Merimbula for their honeymoon, "going fishing" as Mr Pridham said.
Canberra man Levi Freeman-Quay, 28, was found guilty in August 2015 of causing Mr Pridham grievous bodily harm. He told the court he did not remember the incident.
Later, Freeman-Quay was sentenced to nine months in prison, with the remaining 17 months suspended. He was fined $750 for one of the two lesser assaults.