Thanks for the feedback everyone. I don't know if you saw my other post about the Osteoporosis. I got that bad news after I started this thread. If my femur neck really is in danger of fracturing fairly easily in a fall then maybe a recumbent tricycle (or a regular recumbent) may make sense for me too. At least it would seem a lot more difficult to fall hard on the hip from a recumbent trike than from my upright two wheeler.