Wristlock
Wristlock — radiocarpal joint attack via hyperextension or deviation. Shorter injury window; restricted in beginner contexts.
Adapted from InGrappling, Wristlock. System Games did not invent this curriculum.
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The wristlock attacks the radiocarpal and intercarpal joints of the wrist — loading the wrist through hyperextension, rotation, flexion, or lateral deviation past comfortable range. The wrist is attacked across its natural range of motion in any of four directions; each direction loads different structures, and the two that appear most often are hyperextension and rotation.
The wristlock is categorised within the armbar hub because it is typically applied from the same grip contexts as the armbar — an isolated arm, a posted hand, or a grip being controlled. The wrist is the distal joint on the same limb; when the arm is isolated and the elbow cannot be reached for the armbar, the wrist is the alternative target.
The wristlock requires specific attention to context: it is legal in all major grappling formats but carries a beginner restriction and specific caution around warning time. The wrist’s pain signal is less reliable as a damage-prevention tool than the elbow’s. This is not a technique to drill casually with inexperienced partners.
Ruleset contextADCC Legal IBJJF No-Gi Legal Legal from blue belt upward, gi and no-gi; prohibited for white beltsSafety First
Elevated RiskWristlock is an elevated risk technique. The wristlock attacks the radiocarpal and intercarpal joints. The critical safety issue is the wrist's pain signal latency: the wrist's warning mechanism is less reliable than the elbow's or knee's. Structural damage to the wrist ligaments and the TFCC (triangular fibrocartilage complex) can occur before the pain signal reaches a level that clearly communicates danger. Wrist injuries can be slow to heal and affect grip capacity long-term. Serious injury can occur can occur before pain signal is clearly registered — the wrist has the shortest warning window of common submission joints.
If you are new to this technique: read this section before anything else. Understanding the danger is part of understanding the technique.
The person applying the technique is responsible for releasing immediately.