Hi and welcome! I tried everything, too, including stapling (no bypass) and that didn't work, had to have the stapling repaired, that didn't work so finally years later at nearly 300 lbs I tried the good old diet and exercise. It did work until the arthritis stepped in. I have 2 artificial knees now with arthritis hips and lower back the latter which has caused scoliosis. I am in Florida-originally from Nebraska, 61 and trying to re lose 50 lbs. As the the bike, I would think it would be okay for your hips but you could easily as a Dr or physical therapist. You could even check out a team or board here for folks with artificial hips-I'm sure there's one out there. Good luck!