Welcome to Neuro Talk. I am sorry you are experiencing weakness and that your left hand is not straightening out. You sure have gone though alot of tests. I hope others that have more experience with these issues will post and give you a direction. I am not sure which forum would be the best for this problem. I have been here just under two years, and I have alot to learn about peoples conditons. There will be others to help direct you to a site that may be able to help you. I hope a resolution can found for what is happening to you. Jump in on any conversations you want to. We will be here to listen. I do wish you all the best. ginnie