I don't think fixed v's freewheel will make any difference to your knee. Interestingly I suffer a bit with knee pain but find that jumping on the bike after a day at work, feeling tired and with sore knees, all pain disappears after a few minutes pedalling and I can comfortably ride 15 - 20 miles and feel fresher afterwards than when I set off.
I don't think fixed v's freewheel will make any difference to your knee. Interestingly I suffer a bit with knee pain but find that jumping on the bike after a day at work, feeling tired and with sore knees, all pain disappears after a few minutes pedalling and I can comfortably ride 15 - 20 miles and feel fresher afterwards than when I set off.