With some care and the right equipment you might be able to bend the bars to put the handgrips a different angle, but getting the brake levers to also line up could be problematic.
just thinking out loud here...is your bad elbow your left or right, or both? if it's only problematic on your right, how about maybe getting a throttle thingie that may place your elbow in a different position while accelerating and eliminate the pain. ???
It's both. It's an injury from rock climbing that's been dogging me for years. It is worse on my right. Once it gets better to a point that I can ride, I may try one of those throttle paddles. Thanks!
Riding last summer was taking a toll on my elbow too.
I found if I extended my arms to almost straight-out position it helped plenty (by taking stress off my elbow). It meant that my riding posture was more upright than I usually am.