Certain techniques are banned in competition due to their high risk of injury, such as Kani-basami (scissors throw) and Kawazu-gake (one-leg entanglement).
The initial act of breaking the opponent's balance. Without this, the throw is likely to fail. Kodokan Judo Throwing Techniques
10 techniques using the hips as a fulcrum (e.g., O-goshi , Harai-goshi ). Certain techniques are banned in competition due to