My wife had the same procedure for the same reason. Got T-Boned by an old Chevy Blazer and fractured two vertebrae in her lower back. They'll do a lumbar fusion, which isn't that difficult but the recovery period is way long. Don't know if Musi smokes, but if he does he needs to quit. It's crucial, particularly during the first month after this type of surgery.
I wish him a successful recovery and luck in 2012. He's done for 2011. Thank God it wasn't worse.