Which back-control technique prevents the subject from moving by tucking hands under the body?

• A. Arm crank from back control
• B. Kimura from back
• C. Choke from back
• D. Elbow strike from back

Answer: (A)

From back control, the goal is to immobilize the opponent’s arm so they can’t shift position or create space to escape. The arm crank from back control achieves this by securing the arm against the torso and applying leverage that twists the elbow and shoulder while your body keeps the opponent pinned. Because the arm is isolated and pinned, trying to tuck the hands under the body becomes difficult and would worsen the lock, leaving little room for movement. This makes the arm crank from back control especially effective at preventing that kind of escape and forcing the opponent to concede rather than wriggle free.