Yes, I have connectors. They're very common in revision surgery. It's essentially the same type of surgery your son had originally, but they'll connect the old rods to the new rods. Here's a fairly extreme example of a new segmental system being attached to a Harrington rod construct.
http://www.spineuniverse.com/sites/d...f_fig5a-99.jpg
Never argue with an idiot. They always drag you down to their level, and then they beat you with experience. --Twain
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Surgery 2/10/93 A/P fusion T4-L3
Surgery 1/20/11 A/P fusion L2-sacrum w/pelvic fixation