Hi...
I think it would be a good idea to have your son's blood levels checked. It is not normal for a kid to have so little energy, even after a big surgery. I would call your pediatrician or family doctor (as opposed to the surgeon).
Regards,
Linda
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