Ude-hishigi-hiza-gatame 腕挫膝固 (Knee Arm Lock)
Classification: Katame-waza → Kansetsu-waza (Joint Lock Techniques)
Target Joint: Elbow
Type: Straight arm lock (extension)
Description
Ude-hishigi-hiza-gatame is a straight arm lock that uses the knee as the primary pressure point to control and hyperextend uke’s elbow. It is typically applied from a top position when uke’s arm is exposed. The name means “arm-crushing knee-hold”.
How to Apply
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Secure uke’s left arm, typically when he is lying face up.
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Pin uke’s left upper arm using your left hand or by trapping it under your armpit.
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Place your right knee (or left, depending on position) directly against the elbow joint of uke’s extended arm.
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Apply downward pressure with your knee while stabilising the rest of uke’s body.
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This creates a lever that hyperextends the arm at the elbow, forcing uke to submit.
