I hope that you will make a good recovery oneday and infact know you will.
Visualise yourself in your mind eachnight before going to sleep useing that left hand, doing things with it even if its the most simple and truely have faith that this is going to happen soon and let no negativity into your life regarding that arm. It WILL work again, miracles do happen take it from me who had a hellish year in 2008 and a poor start this year but god saved me and has lead me into fresh water, away from the staleness that would have, or could have ruined me. Things do happen for a reason sometimes and in time that reason for me will be clear, but not yet. I'm not saying what occured to you happened for a reason good but possibly something could have happened to you that would have had a wide effect and what went down, went down for that reason but you can put it right. I know of a man who was in a wheel chair for approx 2-3 years and could not walk at all ... period. His physio work was declining and it wasnt looking good, until I told him what I just told you. This was approx 2 years ago now when I worked in the medical field. Anyway after 3 months he started to see positive things, small things and than soon afterwards he suddenly got the need to try and walk .... just like I told him to IMAGINE in his head, walking from the bed to the toilet across the corridor, he did that in this physical world and he DID IT ... he walked for the first time without aid in god knows how long and this was the start as than, no one could stop him. He's now ... get this, working again full time in the job he loved. He thanked me, but I told him not to thank me but to thank god and the power of the mind ... that where their is a will, than their is a way and with the help of god miracles are born. For those that quickly dismiss god as false and it all to be coincidental need to think why they say such things in haste, as when you have been in the bramble bushes as many times like me you know that miracles dont come from nowhere and only the lord and the pure can bring about such a positive change ... alongwith you helping yourself, because god will help you but only if you help yourself.