welcome again awm!!...type clipless pedals in the search box and you should get a ton of hits. We just had one going recently about Speedplays, also type in sore knees - you should get some hits on clipless under that heading too. The only 2 times I ever fell on my clipless I was unclipped on one side - I just forgot the Other side was clipped in and tried to put That foot down too! Like someone said in another thread - it gets to the point you don't think about it anymore, I always unclip on the right so I just know I can't put the left foot down. I tried toe cages loooooonnnnnn time ago and hated them. Until clipless I just rode with nothing on the pedals.......now I can't imagine ever riding without clipless!