i got a replacement knee in may. i was back on back on a bike in about 4 months. the left knee is now the limiting factor, it makes riding more than a few miles impossible. i plan to get the left done later this year. meanwhile i got the old univega alpina uno out for use during the winter/bad weather. jan. thaw today with sun!. i had to swap the 26 for 27" wheels due to lack of vbakes that fit. the brake spring hole on the frame is on the wrong side for today's vbrakes.