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One duck footed can't do wedge. Help - Page 2

post #31 of 33

Borntoski, that makes perfect sense, and yes my tibia and foot rotated while my knee remained in place.  I am familiar with using this leg mechanism when rotating somewhat flat skis around while playing on baby bumps and the like, aka "foot steering" (I guess).  Just forgot.  Thanks.

post #32 of 33
Quote:
Originally Posted by LiquidFeet View Post

 

Bud, I'm curious about this lower leg rotation business you mentioned (in red above).  I'm having a hard time seeing a deeply flexed knee rotating at the knee sideways, but surely you don't mean that?  Given the structure of the knee joint, I'm thinking the rotation when the leg is deeply flexed still happens back up at the hip joint.  If I'm right, how are these two different types of rotation?

Can you explain the difference between the two in more detail to clear up my thinking?

This is very demonstrable by sitting in a chair with your feet off the ground or sitting on a chair lift with feet dangling.  You will notice with your lower leg and femur at a right angle, and twisting your feet to the right or left you are able to abduct and adduct the foot.  This rotation is not coming from the knee joint but the tibia and fibula twisting about below the knee.  There is also some range of motion coming from inversion and eversion of the foot, though in a ski boot this is minimized.

post #33 of 33

Thanks, Bud. 

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