Manual techniques follow the same fluid mechanics as movement.
The knee is not a hinge, but rather has condyles that pivot on the tibia. The shift of synovial fluid supports the tibial rotation. simply compressing the knee harder into flexion is rarely the best solution. If the client cannot access this strategy independently, then we can provide a mechanical and sensory input to improve the outcome. Then it’s a matter of providing a learning opportunity to maintain the improved movement options. Strategy is more important than tactics.
There are many ways. This is one of them.