>>10620598>rotating joint up at the part where it connects to the bodythese never get full rotation, and sometimes are limited to just wiggling back and forth. shit joint
>a rotation joint at the knee.This is very difficult to engineer well. The tolerances need to be insanely good and maintain integrity over time. That's a key point for stability, if that rotation goes even a little bit loose you will never be able to do any wide stances again, it will just buckle. This is why we do not often see this joint style used. Offhand I can only think of a few examples, like Bandai's Fighting Body.
Also, a mid-knee swivel is not the same as a thigh swivel, they don't have the same range of motion. Try to do this pose with a knee swivel, it's impossible. But you can with a thigh swivel.
Thigh swivels are ugly, but they work very well.
