c3c4

I had a c3-c54 fusion done 3 months ago, in December 2009, after a car accident. Now, the MRI shows a new 3mm retrolisthesis. That's in 3 months after the operation! The change result in near complete effacement of the antrerior subrachnoid space. Posterior margin of the spinal cord is flattened but not significantly. The symptoms: lost of balance when walking (but I don't fall), electric current in both legs and hands when I lower my chin, and some tingling in my hands and knees. Some pain at the base of my neck and in the shoulders.

Any advice?

Thank you