Originally Posted by
GimpyDavid
I am a 70 y/o male with a history of 5 left
Total Knee Replacements and would like to return to recreational bike riding.
However, I have only 95 degrees of left knee flexion which prevents me from completing a full crank revolution.
I would like some recommendations for acquiring asymmetric crank arms which will accommodate my left knee ROM
limitations. Thank you-GimpyDavid
Throwing a shorter crank arm on the left side shouldn't be a problem. The only possible issue I can see is that if you adjust the seat height to get minimum flex on the left, your other foot may want to lift off the pedal at the bottom of the stroke. It's worth a try. Worst case you may have to go to a matched set of shorter arms This will reduce your leverage slightly but shouldn't be anything you can't compensate for with the available gear ranges.