That's really good news about the relief in your back pain as a result of the Kyphoplasty. Did the operation manage to straighten out any curve in your spine or regain any lost height? I often get frustrated with the curve/hump in the top of my back from collapsed vertebra, especially when my clothes get stuck across my back when I am trying to take off a tight top. The hump is also not comfortable when sitting down in hard backed chairs.
Any idea what is causing your leg and pelvis pain? I know when I have slept on my one side for most of the night in bed, my pelvis really aches for a good few hours when I wake up. I have a lesion in the top of one of my thighs but I can't remember whether it is the side which the pelvis aches! Hopefully your next cycles will not cause you any more pain or deterioration in eyesight, although you may need to watch out for muscle weakness in your legs which kicked in with me during CTD cycles three and four. You just need to remember, the side effects from chemo will soon disappear after you have finished your cycles.
Jan W