Indianapolis Colts running back Ahmad Bradshaw will undergo neck surgery and miss the remainder of the NFL season, according to ESPN.
The injury occurred September 22 against the San Francisco 49ers. Bradshaw was signed by the Colts in the offseason and rushed for 186 yards in three appearences this season.
The Colts placed starting running back Vick Ballard on injured reserve earlier this season after he tore his ACL in practice.
Trent Richardson was acquired by the Colts for a 2014 first-round pick on September 18 from the Cleveland Browns