Outfielder Larry Walker had an MRI exam of his ailing neck and left shoulder on Thursday that showed his condition is unchanged. Walker, 38, has been bothered by a herniated disc and received a cortisone injection earlier this season. "I might go and take another needle to relieve it," Walker said. "They say the second or the third one usually works better than the first. I've also heard nothing is the way to make it work. This is all speculative stuff. "I've been playing with it. It's not something that's got me confined to a wheelchair. It limits me in some things. I don't think it's something serious." Cardinals physician Dr. George Paleta said the exam showed "essentially the same findings" as Walker's MRI earlier in the season.