Originally Posted by
Tamschoice
I broke the top of my fibular last year. I have approx. 95% use of my knee now. The issue is that on a normal bicycle, the upward peddle position bends my knee to the point that it is very uncomfortable. I have looked into recumbent bikes but, first they are out of my budget and second, I really want to bike sitting up straight. I was thinking a shorter crank would help as well as a "comfort" crank forward bike. Any thoughts?
I've seen a old customer of mine have a engineering company turn his cranks from 175mm to 150mm. Not a huge job if they know what they're doing and make a clean job of it. Less travel for his knees, but you do spin a bit more, so you tend to go up a gear or two to compensate.
Can clarify it works though.