Veteran running back Isaac Redman announced today via Twitter that a spinal cord injury has ended his NFL career. According to the former Steeler, a handful of teams have called to inquire about his status, but orthopedic spine surgeon Dr. Robert Watkins has advised him not to continue playing football.

“Last season I tried my best through a neck injury but I just wasn’t myself on the field,” Redman explained in his statement. “After being released I went [to] Cali to see Dr. Watkins. After two MRIs and a cat scan, he then told me I had suffered a career-ending injury to my spinal cord. … I would like to thank all my fans for the tremendous support throughout my career.”

Redman, 29, spent five seasons with the Steelers, enjoying his best year with the team in 2011. During that season, the Bowie State product ran for 479 yards and three touchdowns, averaging 4.4 yards per carry. For his career, Redman accumulated 1,148 rushing yards, 408 receiving yards, and seven total TDs.