Dixon may skip Friday night's preseason finale against the Minnesota Vikings, but that's only because he had an epidural on Monday.
The guard said he got the shot as a preventive measure, and said it had been planned all along.
Dixon said his back felt just fine when the Dolphins played at Green Bay last Saturday night.
"I feel great," he said. "There's no question in my mind I'll be there for the whole 16 weeks. I feel better than I've felt in a long time. I'm happy where I am physically."