Joint Locks & Restraints

A joint lock is a grappling technique involving manipulation of an opponent's joints in such a way that the joints reach their maximal degree of motion.

In Japanese these are referred to as, kansetsu-waza, "joint locking technique", these typically involve isolating a particular joint and lever it in an attempt to force the joint to move past its normal range of motion. Joint locks usually involve varying degrees of pain in the joints and, if applied forcefully and/or suddenly, may cause injury, such as muscle, tendon and ligament damage and even dislocation or bone fracture.

Joint locks can be divided into five general types according to which section of the body they affect:

  • Arm locks
  • Leg locks
  • Small joint manipulation
  • Spinal locks
  • Wrist locks

These general types can be further divided into subtypes according to which specific joint(s) they affect, or the type of motion they involve.

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