I also have repetitive strain / tendinitis / tendinosis in one hand and it makes biking a pain. I have considered recumbent bikes, but that is a headache in New York City lol.
Has anyone else tried North Road albatross steel handlebars? It seems very cheap to try. I have also considered getting moustache handlebars.
(For the past decade I have used drop handlebars but those put strain on my wrists because in the city one rarely has the time to ride in the drop position -- hands always need to be on brakes due to the density of car or bicycle traffic around almost everywhere.)