Look for the attacker’s knee or leg controlling the opponent’s straightened arm near the elbow line.
Typical position
A controlled groundwork demonstration position. Recognition does not make the technique safe to apply; release and tapping protocols require direct instructor supervision.
Control configuration
Identify how the arm is isolated and whether the control uses the hands, arms, torso, armpit, abdomen, knee, or legs. Do not apply joint pressure from this description.
Recognition objective
The competitive objective is a submission through controlled arm isolation, but this page only identifies the configuration. Joint pressure and release timing require an instructor.
Joint position to recognize
Locate the shape of the isolated arm and where the elbow and shoulder lines are controlled. Use body orientation and the controlled limb or clothing grip to distinguish this technique from similar groundwork.
Application boundary
Stop at visual recognition. Application, resistance, tapping, immediate release, age restrictions, and competition legality belong in supervised instruction.
Expected result
The reference outcome is recognition of a submission configuration—not permission or instruction to apply it.
Visual study notes
Each study note uses the same reference image. Use the video and an instructor demonstration to understand movement and timing.
STUDY NOTE 1
Overall shape
Identify the defining body position described in the recognition cue for Ude-hishigi-hiza-gatame.
Same single reference image
STUDY NOTE 2
Classification clue
Focus on the shape of the isolated arm and where the elbow and shoulder lines are controlled.
Same single reference image
STUDY NOTE 3
Name connection
Connect Ude-hishigi-hiza-gatame with “Knee arm lock” and the visible action or control.
Same single reference image
Common beginner mistakes
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Identifying the technique only from the final pose instead of its defining body relationship.
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Confusing it with another technique in Kansetsu-waza · joint locks.
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Trying to reproduce physical mechanics from a single illustration instead of learning them from an instructor.
Coaching tips to discuss in class
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Connect the Japanese name with the English meaning: “Knee arm lock.”
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Focus on the shape of the isolated arm and where the elbow and shoulder lines are controlled.
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Compare the reference image with the embedded video, then ask an instructor to confirm what distinguishes the technique.
Technique-specific safety
Joint locks can injure the elbow or shoulder before pain provides enough warning. Never practice this from an app; use qualified supervision, controlled resistance, clear tapping, and immediate release.
See a factual or safety problem?
Prepare an email with the technique name. Nothing is submitted automatically.