I have figured out what is wrong with my knee.
The culprit, my beloved "truwk".
Yes, the "truwk". My "truwk" sits just high enough that my patella runs flush with the running boards. So when I lift Pink Ninja and Dash into the back into the car seats and then lean in to fasten the saftey restraints, my patella is being pushed into my plica.
-A small ladder for the children?
-A new Mom that is taller (and I imagine less bitchy, prettier and younger)?
-A step stool?