A joint lock is a

grappling Grappling, in hand-to-hand combat, describes sports that consist of gripping or seizing the opponent. Grappling is used at close range to gain a physical advantage over an opponent, either by imposing a position or causing injury. Grappling ...

technique involving manipulation of an opponent's

joint A joint or articulation (or articular surface) is the connection made between bones, ossicles, or other hard structures in the body which link an animal's skeletal system into a functional whole.Saladin, Ken. Anatomy & Physiology. 7th ed. McGraw ...

s in such a way that the joints reach their maximal degree of motion and hyperextension. In

judō is an unarmed modern Japanese martial art, Olympic sport (since 1964), and the most prominent form of jacket wrestling competed internationally.『日本大百科全書』電子版【柔道】(CD-ROM version of Encyclopedia Nipponica, "Judo"). ...

these are referred to as, 関節技 ''kansetsu-waza'', "joint locking technique"Ohlenkamp, Neil
Classification of Techniques in Kodokan Judo
''judoinfo.com''. Accessed February 26, 2006.) and in

Chinese martial arts Chinese martial arts, often called by the umbrella terms Kung fu (term), kung fu (; ), kuoshu () or wushu (sport), wushu (), are Styles of Chinese martial arts, multiple fighting styles that have developed over the centuries in Greater China. Th ...

as ''

chin na Qinna () is the set of joint lock techniques used in the Chinese martial arts to control or lock an opponent's joints or muscles/tendons so they cannot move, thus neutralizing the opponent's fighting ability. ''Qinna Shu'' ( meaning "technique") ...

'', which literally means "catching and locking". In Korea these are referred to as 관절기(gwan-jerl-gi, joint skill) or 관절꺾기(gwan-jerl-kerk-gi, joint breaking). Joint locks typically involve isolating a particular joint,

lever A lever is a simple machine consisting of a beam or rigid rod pivoted at a fixed hinge, or ''fulcrum''. A lever is a rigid body capable of rotating on a point on itself. On the basis of the locations of fulcrum, load and effort, the lever is div ...

ing it in an attempt to force the joint to move past its normal range of motion. Joint locks generate varying degrees of pain in the joints and, if applied forcefully and/or suddenly, may cause

injury An injury is any physiological damage to living tissue caused by immediate physical stress. An injury can occur intentionally or unintentionally and may be caused by blunt trauma, penetrating trauma, burning, toxic exposure, asphyxiation, o ...

, such as

muscle Skeletal muscles (commonly referred to as muscles) are organs of the vertebrate muscular system and typically are attached by tendons to bones of a skeleton. The muscle cells of skeletal muscles are much longer than in the other types of muscl ...

tendon A tendon or sinew is a tough, high-tensile-strength band of dense fibrous connective tissue that connects muscle to bone. It is able to transmit the mechanical forces of muscle contraction to the skeletal system without sacrificing its ability ...

and

ligament A ligament is the fibrous connective tissue that connects bones to other bones. It is also known as ''articular ligament'', ''articular larua'', ''fibrous ligament'', or ''true ligament''. Other ligaments in the body include the: * Peritoneal li ...

damage and even

dislocation In materials science, a dislocation or Taylor's dislocation is a linear crystallographic defect or irregularity within a crystal structure that contains an abrupt change in the arrangement of atoms. The movement of dislocations allow atoms to sl ...

bone fracture A bone fracture (abbreviated FRX or Fx, Fx, or #) is a medical condition in which there is a partial or complete break in the continuity of any bone in the body. In more severe cases, the bone may be broken into several fragments, known as a '' ...

. In

judo is an unarmed gendai budō, modern Japanese martial art, Olympic sport (since 1964), and the most prominent form of jacket wrestling competed internationally.『日本大百科全書』電子版【柔道】(CD-ROM version of Encyclopedia Nipponi ...

, the combining of standing locks with throws is forbidden due to the risk of physical harm to the falling opponent, while

Brazilian jiu-jitsu Brazilian jiu-jitsu (BJJ; pt, jiu-jitsu brasileiro ) is a self-defence martial art and combat sport based on grappling, ground fighting (ne-waza) and submission holds. BJJ focuses on the skill of taking an opponent to the ground, control ...

jujutsu Jujutsu ( ; ja, link=no, 柔術 , ), also known as jiu-jitsu and ju-jitsu, is a family of Japanese martial arts and a system of close combat (unarmed or with a minor weapon) that can be used in a defensive or offensive manner to kill or subdu ...

taijutsu is a Japanese martial art blanket term for any combat skill, technique or system of martial art using body movements that are described as an empty-hand combat skill or system. Taijutsu is a synonym for Jujutsu (method of unarmed or with minor ...

aikido Aikido ( , , , ) is a modern Japanese martial art that is split into many different styles, including Iwama Ryu, Iwama Shin Shin Aiki Shuren Kai, Shodokan Aikido, Yoshinkan, Renshinkai, Aikikai and Ki Aikido. Aikido is now practiced in around 1 ...

sambo , aka = Sombo (in English-speaking countries) , focus = Hybrid , country = Soviet Union , pioneers = Viktor Spiridonov, Vasili Oshchepkov, Anatoly Kharlampiev , famous_pract = List of Practitioners , oly ...

, and

hapkido Hapkido ( , , also spelled ''hap ki do'' or ''hapki-do''; from Korean 합기도 ''hapgido'' ) is a hybrid Korean martial art. It is a form of self-defense that employs joint locks, grappling, throwing techniques, kicks, punches, and other stri ...

allow their use. Joint locks can be divided into five general types according to which section of the body they affect: * Armlocks *

Leglock A leglock is a joint lock that is directed at joints of the leg such as the ankle, knee or hip joint. A leglock which is directed at joints in the foot, is sometimes referred to as a foot lock and a lock at the hip as a hip lock. Leglocks ar ...

s *

Small joint manipulation Small joint manipulation, in grappling, refers to twisting, pulling or bending fingers, toes, wrists and ankles to cause joint locks in the various joints in those appendages. Technique Most small joint manipulation is done on the hands or fe ...

Spinal lock In combat sports, a spinal lock is a multiple joint lock applied to the spinal column, which is performed by forcing the spine beyond its normal ranges of motion. This is typically done by bending or twisting the head or upper body into abnormal po ...

s *

Wristlock A wristlock is a joint lock primarily affecting the wrist-joint and, in some cases, the radioulnar joints through rotation of the hand. A wristlock is typically applied by grabbing the opponent's hand, and bending and/or twisting it. Wristlocks a ...

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

Usage

Joint locks are commonly featured in all forms of

, whether it be in

martial arts Martial arts are codified systems and traditions of combat practiced for a number of reasons such as self-defense; military and law enforcement applications; combat sport, competition; physical, mental, and spiritual development; entertainment; a ...

self-defense Self-defense (self-defence primarily in Commonwealth English) is a countermeasure that involves defending the health and well-being of oneself from harm. The use of the right of self-defense as a legal justification for the use of force in ...

combat sport A combat sport, or fighting sport, is a competitive contact sport that usually involves one-on-one combat. In many combat sports, a contestant wins by scoring more points than the opponent, submitting the opponent with a hold, disabling the opp ...

hand to hand combat Hand-to-hand combat (sometimes abbreviated as HTH or H2H) is a physical confrontation between two or more persons at short range (grappling distance or within the physical reach of a handheld weapon) that does not involve the use of weapons.Huns ...

application. The variants involving lesser levering on a smaller

(such as wristlocks) are often featured in

law-enforcement Law enforcement is the activity of some members of government who act in an organized manner to enforce the law by discovering, deterring, rehabilitating, or punishing people who violate the rules and norms governing that society. The term en ...

application, where they are used as

pain compliance holds A grappling hold, commonly referred to simply as a hold that in Japanese is referred to as ''katame-waza'' ( "grappling technique"), is any specific grappling, wrestling, judo, or other martial art grip that is applied to an opponent. Grapplin ...

. Joint locks that involve full body leverage can on the other hand be used in

to partially or fully disable an opponent, by tearing major joints such as

knee In humans and other primates, the knee joins the thigh with the leg and consists of two joints: one between the femur and tibia (tibiofemoral joint), and one between the femur and patella (patellofemoral joint). It is the largest joint in the hu ...

s or

elbow The elbow is the region between the arm and the forearm that surrounds the elbow joint. The elbow includes prominent landmarks such as the olecranon, the cubital fossa (also called the chelidon, or the elbow pit), and the lateral and the media ...

s. Common

featuring joint locks include

Aikido Aikido ( , , , ) is a modern Japanese martial art that is split into many different styles, including Iwama Ryu, Iwama Shin Shin Aiki Shuren Kai, Shodokan Aikido, Yoshinkan, Renshinkai, Aikikai and Ki Aikido. Aikido is now practiced in around 1 ...

Brazilian Jiu-Jitsu Brazilian jiu-jitsu (BJJ; pt, jiu-jitsu brasileiro ) is a self-defence martial art and combat sport based on grappling, ground fighting (ne-waza) and submission holds. BJJ focuses on the skill of taking an opponent to the ground, control ...

Catch Wrestling Catch wrestling (originally catch-as-catch-can) is a classical hybrid grappling style and combat sport. It was developed by J. G. Chambers in Britain . It was popularised by wrestlers of travelling funfairs who developed their own submission h ...

Eskrima Arnis, also known as Kali or Eskrima/Escrima, is the national martial art of the Philippines. The three are roughly interchangeable umbrella terms for the traditional martial arts of the Philippines (" Filipino Martial Arts", or FMA), which em ...

Eagle Claw Eagle Claw (; pinyin: yīng zhǎo pài; ''eagle claw school'') is a style of Chinese martial arts known for its gripping techniques, system of joint locks, takedowns, and pressure point strikes, which is representative of Chinese grappling ...

Fu Jow Pai Fu Jow Pai (, Cantonese Jyutping: ''Fu2 Zaau2 Pai3'', Mandarin , literally "Tiger Claw School", also "Tiger Claw System" or "Tiger Claw Style"), originally named "Hark Fu Moon" (, Cantonese Jyutping: ''Hak1 Fu2 Mun4'', Mandarin , literally "Bla ...

Hapkido Hapkido ( , , also spelled ''hap ki do'' or ''hapki-do''; from Korean 합기도 ''hapgido'' ) is a hybrid Korean martial art. It is a form of self-defense that employs joint locks, grappling, throwing techniques, kicks, punches, and other stri ...

Hung Gar Hung Ga (), Hung Kuen (), or Hung Ga Kuen () is a southern Chinese martial art belonging to the southern Shaolin styles. The hallmarks of Hung Ga are strong stances, notably the horse stance, or "si ping ma" (), and strong hand techniques, no ...

Jujutsu Jujutsu ( ; ja, link=no, 柔術 , ), also known as jiu-jitsu and ju-jitsu, is a family of Japanese martial arts and a system of close combat (unarmed or with a minor weapon) that can be used in a defensive or offensive manner to kill or subdu ...

Judo is an unarmed gendai budō, modern Japanese martial art, Olympic sport (since 1964), and the most prominent form of jacket wrestling competed internationally.『日本大百科全書』電子版【柔道】(CD-ROM version of Encyclopedia Nipponi ...

Sambo , aka = Sombo (in English-speaking countries) , focus = Hybrid , country = Soviet Union , pioneers = Viktor Spiridonov, Vasili Oshchepkov, Anatoly Kharlampiev , famous_pract = List of Practitioners , oly ...

Ninjutsu , sometimes used interchangeably with the modern term , is the martial art strategy and tactics of unconventional warfare, guerrilla warfare and espionage purportedly practised by the ninja. ''Ninjutsu'' was a separate discipline in some tradit ...

Shoot wrestling Shoot wrestling is a combat sport that originated in Japan's professional wrestling circuit of the 1970s. Professional wrestlers of that era attempted to use more realistic or even "full contact" moves in their matches to increase their exciteme ...

, and

mixed martial arts Mixed martial arts (MMA), sometimes referred to as cage fighting, no holds barred (NHB), and ultimate fighting, and originally referred to as Vale Tudo is a full-contact combat sport based on striking, grappling and ground fighting, inc ...

. They are usually practiced in a maximally safe manner, with controlled movements, and releasing the joint lock once it is apparent that it has been effectively applied. In

combat sports A combat sport, or fighting sport, is a competitive contact sport that usually involves one-on-one combat. In many combat sports, a contestant wins by scoring more points than the opponent, submitting the opponent with a hold, disabling the oppo ...

, joint locks are used as submission holds, and are intended to force the opponent to submit; the lock will be controlled and held until an opponent submits or a referee recognizes the threat of

and intervenes. The types of joint locks allowed in competitions featuring them varies according to the perceived danger in their application. Armlocks are generally considered safer, while

small joint manipulation Small joint manipulation, in grappling, refers to twisting, pulling or bending fingers, toes, wrists and ankles to cause joint locks in the various joints in those appendages. Technique Most small joint manipulation is done on the hands or fe ...

and spinal locks are banned in nearly all

References

*Iverson, Steven. ''Unarmed Combat''. Online excerpt
Atlasbooks
''www.atlasbooks.com''. Accessed March 6, 2006. {{martial arts Grappling positions Martial art techniques ja:アームロック

Usage

See also

References