The 25-year-old missed the first six games of the season due to a suspension, and played just nine games for the club before he tore his ACL against the Houston Texans, forcing him to miss the post-season.
"With today's medicine and what's going on now like ACL, it's really not as serious as it used to be," Miller told ESPN.
"I'm 100% positive I'll be able to come back not only be the same Von, [but] I got to be better. You come back and be the same guy it's like you go 'it's the same Von again' and I got to be better."
Miller recorded 34 tackles and nine sacks for the Broncos in the 2013 season.