Кансецу Гери

SubFamily

Translation: удар по ставата

Overview

Кансецу Гери е стъпващ удар, насочен към колянната става на противника — кракът се забива надолу или по диагонал в предната или страничната част на коляното, хиперекстендирайки или странично натоварвайки ставата. [1] Това е един от най-ефективните и най-спорните удари в бойните изкуства — чист кансецу гери може да скъса ACL/MCL и да приключи боя мигновено, но носи и висок риск от трайно увреждане на коляното. [1] Разрешен в MMA като „наклонен удар

Also known as
Kansetsu-GeriJPУдар по колянотоРазрушаващ удар по ставатаНаклонен удар
Used in
Shotokan KarateKyokushinGoju-RyuWado-RyuMMA

History & Origin

Documented in traditional karate manuals. [1]

Country of origin· shown in random order

  • Japan
    関節蹴り (Kansetsu Geri)Traditional

Effectiveness

One of the most effective fight-stopping techniques — a torn ACL/MCL immediately ends the fight. [1] In MMA, the oblique kick has become a standard range-management tool, particularly used by Jon Jones and other long-limbed fighters. Highly controversial due to the permanent injury risk — many fighters and commentators have called for it to be banned. [1]

Competition Record

Primarily a training, demonstration, and point-fighting technique. Rarely seen in full-contact MMA or kickboxing due to acrobatic risk and telegraphing. Appears occasionally in TKD and point-fighting karate tournaments. [1]

Images

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Biomechanical Mechanism

Primary Action — Stomping/pushing kick driven into the opponent's knee joint
Joints Involved — Attacker's hip (angle), knee extension (push), ankle (foot contacts knee)
Force Vector — Downward and/or lateral — targeting the knee's weakest angles
Striking Surface — Sole of foot or heel

Position & Entry

From fighting stance — Push the foot downward into the opponent's front knee
From distance — Use as a range-management tool — stomp the knee as they advance
Against a charging opponent — Drive the knee kick as they step forward

Variants

Front kansetsu geri — targeting the front of the knee (hyperextension)
Side kansetsu geri — targeting the side of the knee (lateral stress on MCL)
Oblique kick — angled downward to the knee (MMA version)
Low teep to the knee — pushing version

Videos

karate kicks tutorial for beginners
Fitness Karate Academy

karate kicks tutorial for beginners

0
Кансецу Гери·Fitness Karate Academy

How to learn Karate kicks step by step? here is Karate kicks tutorial for beginners, this lesson is about groin kick or …

Kansetsu Geri (Stomp Kick) used in traditional Karate.
Goju Ninja

Kansetsu Geri (Stomp Kick) used in traditional Karate.

0
Кансецу Гери·Goju Ninja

The Stomp Kick or Kansetsu Geri (instruction at 1:09) used in Karate is a devastating attack used to destroy the lower …

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3 videos

What Instructors Say

Kansetsu geri, literally 'joint kick,' encompasses multiple striking techniques targeting the knee joint in traditional karate. Fitness Karate Academy discusses kingiri (groin kick), which uses the top of the foot to deliver a straight front kick to the groin area while maintaining guard in zenkutsu dachi stance, emphasizing that the technique works regardless of opponent positioning. Goju Ninja provides the most direct kansetsu geri instruction, distinguishing between outside and inside stomp kicks that drive with the heel rather than a blade foot, originating from a square stance with the foot positioned at the side of the knee. Both techniques start robotic and simple but evolve with advanced practitioners using a scooping motion of the leg and knee bending to increase power and range of motion; Goju Ninja notes these are widely used in traditional karate systems and have applications in other striking arts like Muay Thai and savat. Iron Ronin Budo emphasizes the kansetsu geri as a knee strike executed from a chambered position with the knee raised to solar plexus level or higher, utilizing the stretch reflex to generate force during the downward drive. Iron Ronin stresses the importance of core strength and hip flexor conditioning through supplementary exercises like weighted leg raises and resistance band work to achieve the height and power necessary for effective execution. All three instructors agree the technique requires proper stance foundation and deliberate knee chamber positioning, though they emphasize different target areas—groin, knee cap, and lateral knee—reflecting varied applications within traditional karate.

Synthesized from 3 instructors

  • Fitness Karate Academy — karate kicks tutorial for beginners: Describes kingiri (groin kick variant) using top of foot striking surface, executed from zenkutsu dachi stance with bent knee in front-facing position; emphasizes technique works from multiple opponent angles.
  • Goju Ninja — Kansetsu Geri (Stomp Kick) used in traditional Karate.: Details outside and inside stomp kick mechanics using heel-driven strikes from square stance; describes progression from simple robotic movement to advanced scooping motion with knee bend for increased power and force delivery; notes applications in defending against front kicks and leg sweeps.
  • Iron Ronin Budo — Kansetsu Geri: Focuses on knee chamber height and timing within kata context; emphasizes elevated chamber to solar plexus level or higher to activate stretch reflex; provides conditioning protocols using ishi sashi and resistance bands to develop hip flexor and core strength necessary for powerful execution; discusses variations in downward angle and shin contact points.

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Ratings

Danger Rating

Risk of injury to the person this technique is applied to

9
Extreme9/10

Can tear ACL/MCL and cause permanent knee damage. Career-ending potential.

Difficulty

Skill level needed to execute this technique reliably

Intermediate
Competition Legality

Whether this technique is allowed under major competition rule sets

Illegal
WKF Karate— technique prohibited or excessive contact
WKF Kumite Rules 2026PDF
Legal
Kyokushin
Unified MMA
Unified Rules of MMA, August 2025PDF

Training Notes

✓Aim for the SIDE or FRONT of the knee — these are the weakest angles
✓The kick PUSHES rather than snaps — drive through the joint
✓Use as a range tool — the opponent can't advance if their knee is being attacked
✓In training, use EXTREME caution — this technique easily causes real injury

Common Mistakes

!Kicking the thigh instead of the knee — wrong target
!Snapping instead of pushing — the joint needs sustained pressure
!Using full force in training — VERY dangerous to training partners
!Not angling correctly — straight kicks to the kneecap are less effective

Related Techniques

Counter Techniques

Setup Chain

1Jab-cross to face → opponent focuses on head defense → kansetsu geri to lead knee
2Rear low kick to thigh → opponent widens stance to absorb → kansetsu geri to straightened lead leg
3As opponent advances → time kansetsu geri to their front knee as weight transfers forward

Sources & References

Primary Source

Oyama, M. This Is Karate / Essentials of Karate.

1BookOyama, M. This Is Karate / Essentials of Karate.

[1] Oyama / Funakoshi, Karate technique manuals

2BookFunakoshi, G. Karate-Do Kyohan.
3SyllabusJapan Karate Association (JKA) — Official Technical Terminology

Official karate technique names (和語/漢語)

4OtherJapanese Martial Arts Standard Terminology (武道用語)

Established Japanese martial arts naming convention — native Japanese term (和語/漢語)

5CitationOyama, M. This Is Karate / Essentials of Karate.

[1] Oyama / Funakoshi, Karate technique manuals

6CitationFunakoshi, G. Karate-Do Kyohan.

Community

Athletics

Requires

precise targeting of the knee joint, hip extension power for stomping trajectory

Favours

long legs for range, heavy body weight increases impact force

Key muscles

hip extensors (downward drive), quadriceps (extension), core (stability)

Notes

Kansetsu geri (joint kick / oblique kick) targets the knee joint with a stomping trajectory. In MMA, Jon Jones popularized this technique — highly controversial due to the risk of permanent ACL/MCL tears. (Oyama, This Is Karate; MMA competition records; De Bremaeker & Faige, Essential Book of Martial Arts Kicks)

Frequently Asked Questions

What's the difference between a beginner and advanced kansetsu geri?

Beginners often perform the kick too rigidly and straight up and down, while more advanced practitioners use a scooping motion with the inside of the leg to make the technique more fluid and effective (Goju Ninja).

What happens if my kansetsu geri doesn't break the opponent's knee?

If it doesn't break the knee, the kick can collapse the leg and drive the opponent backward, which puts them in a disadvantageous position while you gain positional advantage (Goju Ninja).

What part of the foot should I use for kansetsu geri?

The top of the foot is used for kansetsu geri, which is a groin or knee kick performed from a close fighting distance (Fitness Karate Academy).

Как работи Кансецу Гери?

Кансецу Гери е стъпващ удар, насочен към колянната става на противника — кракът се забива надолу или по диагонал в предната или страничната част на коляното, хиперекстендирайки или странично натоварвайки ставата. Това е един от най-ефективните и най-спорните удари в бойните изкуства — чист кансецу гери може да скъса ACL/MCL и да приключи боя мигновено, но носи и висок риск от трайно увреждане на коляното.

Откъде произлиза Кансецу Гери?

Documented in traditional karate manuals.

Разрешена ли е Кансецу Гери в състезания?

WKF Karate: Banned: забранена — technique prohibited or excessive contact; Unified MMA: Legal {src:Unified Rules of MMA, August 2025|/sources/Unified: легална — MMA-Rules-August-2025.pdf}

Колко опасна е Кансецу Гери?

Оценка на опасност 9/10. Extreme — can tear ACL/MCL and cause permanent knee damage. Career-ending potential.

Как се подготвя Кансецу Гери?

Стандартната верига за подготовка: Jab-cross to face → opponent focuses on head defense → kansetsu geri to lead knee → Rear low kick to thigh → opponent widens stance to absorb → kansetsu geri to straightened lead leg → As opponent advances → time kansetsu geri to their front knee as weight transfers forward.

Как да се защитя срещу Кансецу Гери?

Стандартните контри включват: Lift the knee — raising the target leg removes the bracing point / Check with shin — meet the kick with a shin block before it reaches the knee / Angle change — step offline at 45 degrees to avoid the linear stomping trajectory.

Какви са вариантите на Кансецу Гери?

Чести варианти: Front kansetsu geri (targeting the front of the knee (hyperextension)); Side kansetsu geri (targeting the side of the knee (lateral stress on MCL)); Oblique kick (angled downward to the knee (MMA version)); Low teep to the knee (pushing version).

Колко ефективна е Кансецу Гери в състезания?

Primarily a training, demonstration, and point-fighting technique. Rarely seen in full-contact MMA or kickboxing due to acrobatic risk and telegraphing.

Какви са честите грешки при изпълнение на Кансецу Гери?

Основни грешки, за които да внимавате: Kicking the thigh instead of the knee — wrong target / Snapping instead of pushing — the joint needs sustained pressure / Using full force in training — VERY dangerous to training partners / Not angling correctly — straight kicks to the kneecap are less effective.

Какви други имена има Кансецу Гери?

Кансецу Гери е известна също като Kansetsu Geri, Kansetsu-Geri, Удар по коляното, Разрушаващ удар по ставата, Наклонен удар.

kansetsu gerikaratefront kick