Denver Broncos right guard Chris Kuper will reportedly miss six weeks of action after breaking one of the bones in his left forearm.
According to the Denver Post, Kuper suffered the injury during a drill at Tuesday's practice. He is expected to be replaced by veteran Manny Ramirez.
The North Dakota product has been battling back from a nasty ankle and lower leg injury suffered in the final week of the 2011 regular season.
Kuper has played in 79 career games (73 starts) with the Broncos.