David, What you’re experiencing is very common. Due to life
experience, the alignments in your leg are out/off a little bit. It is normal
to require some effort to realign the hip, knee and foot, and of course this
realignment will engage the bound muscles, fascia and ligaments of the legs. So
long as you don’t force your body into alignment, and slowly over a period of
time you encourage your body into the ideal alignment, you won’t cause yourself
any problems. Through this process, you will release accumulated tension in the
legs (which is creating the misalignment) and lengthen those affected soft tissues.
With regular practice over some months, your legs will realign and you will be
able to maintain your alignments without effort. This is the typically process of
learning and embodying any nei gong. You put in a little effort, encourage the
body into proper alignment and/or accuracy of motion, and then your standing
and moving practices rid the body of accumulated tension through ongoing
training. Good luck!