I just came across this forum, I am looking for help to get back on a bike after a 15 year lapse. I am a 65yo retired nurse with a partial knee replacement and DJD........after several years of PT and water therapy I have been trying to get back on a bike.....I have all but given up until I ended up here after a GOOGLE search....it looks like many before me have the same issue of limited ROM......you have given me hope with all the advice given to others. I will be visiting my LBS to see how they can help me . THANK YOU for forums like these !!!