I have mild scoliosis, a shorter left leg, a right knee that is severely knocked and is toe out 25 degrees, a left knee that doesn't have a full extension, and a pelvis that 'looks' to the left. On top of that I have problems with coordination and muscle strength that keep me from being able to pedal standing up and from mounting a bike 'properly'.

I don't think a 'bent will be a problem for me to ride, or to climb on one, since I can ride a bike, although not well. Some of the problem, and discomfort, I have on upright bikes is bio-mechanical - since I can't mount properly by lifting myself onto the saddle when in motion, I need to have the saddle low enough that I can balance on one foot, which interferes with efficiency. I have saddle problems because I can't sit 'square' in the saddle, since my pelvis looks left. I'm hoping a 'bent will allow me to avoid these problems in my future rides.