Hiza Geri, or 'Knee Strike,' is a powerful close-range attack in Shotokan karate. It involves thrusting the knee forward to strike an opponent's torso or head. The technique is executed by raising the knee sharply while maintaining a firm stance, typically from positions such as Zenkutsu Dachi or Kiba Dachi. Hiza Geri is effective in disrupting an opponent's balance and delivering significant impact. It is often used in self-defense situations or in combination with other strikes to create openings for follow-up attacks.