In addition to striking arts, grappling arts and throwing arts are covered at length in Kosho Ryu schools. The same laws and principles apply to both. Furthermore, Kosho Ryu sees no difference between striking arts and throwing arts other than intent. Rotation takes place in all motion. By studying natural laws of motion and balance, we can understand kuzushi, imbalance.
All movement requires a temporary state of imbalance to regain the next balance point.
Without imbalance, movement is impossible. Movement is a falling process . Therefore, when we continue the imbalanced movement of an attacker, we make it impossible for him to regain balance. This is the process used to freeze the motion of an opponent used in Kosho Ryu's Otoko No Atemi. Freezing the opponent disallows him leverage from either side of his body and traps him using his own skeletal structure to do so.