didn't you already post on this subject? Reinforce the fence, don't let your dog outside unless you have it on a leash and at your side, and line the inside of the fence with an invisible fence. Reinforce the fence to make it better, or higher (if needed).
We have one spot in our fence that isn't the same size as the rest of the bars...ChiChi can run full speed into that area and hop through the fence, but she can't figure out how to get back in. We put up an old broom stick, tied it with a hair tie and tada! No more escaping for her.