One word of caution to those macho posturing about the blue Flexbar. If you have a damaged anything, whether its tissue/muscle/tendon/ligament rarely is it a good idea to be putting the maximum amount of force possible through the injured area. Maximum force and too many repetitions each day does not make it heal quicker. 100 repeitions a day will not make it heal 100 times faster. You need to begin low and slow, otherwise you risk making the injury worse.
I am using the blue bar with no pain. If there is ANY stress/pain on the elbow, I'd stop.