I am sorry to hear that your pain is still with you and the the Electromyography (EMG) wasn't able to find the issue for you left hand. Yes the surgery help greatly. For the First couple of weeks, my hands still where numb, stinging, and tingling, but I was able to get through the day. Then the symptoms started to go away. I still have some shock go through my left arm every so often, my strength is up to about 90% of what it was prior, and the middle lower part of my palms hurt something aweful if I put to much weigh on them. But I am reminded by my specialist that recovery can take up to a year. Even if I don't make a full recovery, I am happy to be rid of the pian that was there before. I feel for each and every one that has this issue.