I'm very new to dressage and posting(i always rode western) so i won't be any help, but i just wanted to say that i'm having the exact same problem, i was making some progress, but then my trainer moved 2 weeks ago, and i can't afford any of the other trainers around here....I'll be watching this post for some tips, i always thought most of my problem is that i have bad kneesPosting in dressage has always been difficult for me. How exactly do you post without locking your hips & turning out your leg? I find if i try to use my thighs to post ( instead of using the stirrups to push myself up) i lock my hips, while if i leave my thighs out & use my stirrups, my toes turn out. In both situations i am unable to use my legs effectivly. What should i be doing to properly & effectivly post in dressage?