
Originally Posted by
barbndr
Based on your symptoms, the herniations in you neck have effected the nerve roots to some degree that supply your left arm. Essentially, the left arm is not recieving the same amount of neural imput as the right (picture a power cord working at half capacity). Despite not losing any size (girth) I would bet that you've lost a fair amount of muscualture accounting for the strength loss. The reason for the vascularity difference is the same. If the problem is indeed solved (ie the compression on the nerve(s) is no longer present) the arm will come back to normal strength with regular bilateral lifting. If you still have nerve damage that is healing (very slow process) doing some extra unilateral work may not hurt. If the nerve is still compressed but you are pain free due to the epidural, then the symptoms are masked but the cause is still there. Basically, you can try to do extra with the left side, but with nerve being compromised progress will be very slow and minimal until successful resolution of nerve compression.