Kani Basami

SubFamily

蟹挟(Kani Basami)

Traditional

Translation: scissor throw (crab pinch)

Overview

Kani Basami (crab scissors) is a scissor takedown subfamily where the attacker jumps or drops beside the opponent and scissors their legs around the opponent's legs — one leg sweeping forward at the knees and the other sweeping backward at the ankles — to topple the opponent sideways. [1] The scissoring action creates a powerful rotational force that is nearly impossible to resist once the legs are in position. [1],[2] Despite its effectiveness, kani basami carries significant injury risk because the scissoring force can hyperextend or laterally stress the opponent's knee joint. [2] The technique has been banned in judo (IJF) competition since 1980 but remains legal in certain sambo, submission grappling, and some MMA rulesets. [2],[3]

Also known as
Kani Basami[1]Crab Scissors[2]Flying Scissors Takedown[3]Nozhnitsy[4]

History & Origin

Kani basami is a classical judo technique that was once commonly used in competition before the IJF banned it following a series of serious knee injuries. [1] The technique's dramatic effectiveness ensured its survival in sambo and no-gi grappling competitions where it remains a legal and effective weapon. [2],[3]

Effectiveness

Kani basami (scissors sweep/crab scissors) uses a scissoring leg action where one leg attacks behind the opponent's knees while the other blocks from the front, toppling them. [1] The technique is powerful but banned in judo due to the risk of lateral knee ligament injuries. [1],[2]

Lineage

Kani basami is a traditional judo technique classified in the Kodokan syllabus but later prohibited in IJF competition. [1] The technique has cognates in sambo (nozhnitsï) and was adapted into BJJ competition where it remains legal in some rule sets. [2]

Competition Record

Kani basami was banned from IJF judo competition in 1980 after causing multiple serious knee injuries. [1] It remains legal in IBJJF competition for brown and black belts and in some sambo rule sets. [2]

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Biomechanical Mechanism

Primary ActionPenetrating step and level change to attack the opponent's legs — disrupting their base of support
Joints InvolvedAttacker's knees and hips (level change), opponent's knee or ankle (controlled point)
Force VectorForward and downward — closing distance and driving through the opponent's lower body
Takedown MechanicRemoving one or both legs from the opponent's base forces them to fall or be driven to the mat

Position & Entry

From clinch rangeEstablish upper body control (collar tie, underhook, or body lock), obstruct the support leg with a trip or sweep, and drive the opponent to the mat
From grip fightingUse push-pull action to shift the opponent's weight, then attack the loaded leg with the trip

Videos

Kani basami

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Kani Basami·Energia Martial Arts

Kani basami The scissor takedown! We are sharing part of our DVD 'Leglocks Unlocked'; available at BJJ Fanatics. In th

1 video

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Ratings

Danger Rating

Risk of injury to the person this technique is applied to

10
Extreme10/10

Broke Yasuhiro Yamashita's fibula at 1980 All Japan Championships. Scissoring action can fracture tibia/fibula, tear ACL/MCL/PCL, and dislocate the knee instantaneously with no opportunity to tap. Banned from judo, IBJJF, and ADCC for causing career-ending injuries. [1,2,3]

Difficulty

Skill level needed to execute this technique reliably

Advanced
Competition Legality

Whether this technique is allowed under major competition rule sets

Illegal
IJF — Scissor takedowns prohibited
IJF Sport and Organisation Rules 2025, Article 27PDF
IBJJF — Scissor takedown prohibited at all belt levels
IBJJF Rules Book v6.0, June 2024PDF
UWW — Scissor holds on body prohibited in both freestyle ...
UWW International Wrestling Rules, January 2026PDF
ADCC — Scissor takedowns banned in all divisions except a...
ADCC Rules Update, April 2025PDF
Legal
Unified MMA — Legal takedown technique
Unified Rules of MMA, August 2025PDF
FIAS Sport Sambo — Legal — all takedowns permitted
FIAS International Sambo Competition RulesPDF
FIAS Combat Sambo — Legal
FIAS Combat Sambo RulesPDF

Training Notes

Drop beside the opponent and extend one leg behind their ankles, the other in front of their knees
Scissors the legs together with a whipping motion to sweep both legs out
Upper body grips on the arm or collar help you control the direction of the fall
Be aware this technique is banned in judo competition (IJF) due to knee injury risk — only train in contexts where it's permitted
Use kani basami as a surprise attack from unusual angles
Practice with control and at reduced speed — the scissoring force can cause serious knee injuries

Common Mistakes

!Dropping straight in front of the opponent instead of to the side — they fall on top of you
!Scissoring at the same level (both legs at the knees) instead of one high and one low
!Not controlling the upper body, so the opponent can step over your legs
!Applying too much lateral force to the knee joint — control the power to protect training partners
!Attempting kani basami in a judo competition where it's an immediate disqualification
!Not committing to the drop, ending up in a seated position with no scissoring power

Related Techniques

Counter Techniques

Setup Chain

1Establish Contactuse grip, tie, or clinch to control the opponent
2Create Off-Balanceuse push-pull action to disrupt the opponent's base
3Execute the Takedownapply the specific takedown mechanic with commitment
4Follow to Groundmaintain control as the opponent goes down to secure position

Sources & References

Primary Source

Kodokan Judo — Official Nage-waza Classification

1BookKodokan Judo — Official Nage-waza Classification

Traditional Judo throwing/takedown terminology (Kodokan Institute)

Official Kodokan ground technique classification system

Standard Japanese martial arts terminology (kanji/hiragana)

4OtherJapanese Martial Arts Standard Terminology (武道用語)

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

5CitationKodokan Judo — Official Nage-waza Classification

Traditional Judo throwing/takedown terminology (Kodokan Institute)

Community

Athletics

Requires

timing, balance, upper body control for push-pull

Favours

good coordination and sense of opponent's weight distribution

Key muscles

core stabilisers, hip adductors/abductors, calves

Sub-techniques

Frequently Asked Questions

How do I catch both of my opponent's legs properly in Kani Basami?

Your rear leg makes a back step on your opponent's secondary leg while your primary leg goes across their thigh, creating a scissor on both a high and low point. Keep yourself high and positioned close to their hip as you execute the technique.

What should I do if I can't reach my opponent's far leg?

Lean in a bit as you fall—doing it in one continuous motion rather than step-by-step will make it much easier to reach. Just be careful not to drop your hip during the movement.

How do I defend against the running man escape from Kani Basami?

Keep control of your opponent's armpit or shoulder to prevent them from pushing their knee to the outside. Since your leg is already on the inside, lean into them and swing your other leg back to maintain the scissor position.

When is the best time to set up Kani Basami from a single leg takedown?

When your opponent shoots for the single leg, keep your body weight close to them and control their head or armpit, then throw your leg back to transition into the Kani Basami. You can also tempt them into taking the single leg by staying in a grip-fighting position with one foot forward.

How does the Kani Basami work?

Kani Basami (crab scissors) is a scissor takedown subfamily where the attacker jumps or drops beside the opponent and scissors their legs around the opponent's legs — one leg sweeping forward at the knees and the other sweeping backward at the ankles — to topple the opponent sideways. The scissoring action creates a powerful rotational force that is nearly impossible to resist once the legs are in position.

Where does the Kani Basami come from?

Kani basami is a classical judo technique that was once commonly used in competition before the IJF banned it following a series of serious knee injuries. The technique's dramatic effectiveness ensured its survival in sambo and no-gi grappling competitions where it remains a legal and effective weapon.

Is the Kani Basami legal in competition?

IJF: banned — Scissor takedowns prohibited; IBJJF: banned — Scissor takedown prohibited at all belt levels; UWW: banned — Scissor holds on body prohibited in both freestyle and Greco-Roman; Unified MMA: legal — Legal takedown technique; ADCC: banned — Scissor takedowns banned in all divisions except adult advanced; FIAS Sport Sambo: legal — Legal — all takedowns permitted; FIAS Combat Sambo: legal — Legal; NCAA Folkstyle: legal — Legal, scored as takedown (2 points)

How dangerous is the Kani Basami?

Danger rating 10/10. Extreme — broke Yasuhiro Yamashita's fibula at 1980 All Japan Championships. Scissoring action can fracture tibia/fibula, tear ACL/MCL/PCL, and dislocate the knee instantaneously with no opportunity to tap. Banned from judo, IBJJF, and ADCC for causing career-ending injuries.

How do I set up the Kani Basami?

The standard setup chain: Establish Contact → Create Off-Balance → Execute the Takedown → Follow to Ground.

How do I defend against the Kani Basami?

Standard counters include: Sprawl — drop hips back and drive weight down to stuff the takedown attempt / Underhook — establish inside position to control distance and prevent the takedown entry / Post and Circle — post on the attacker's head and circle away to break their angle / Level Change Defence — recognize the shot early and react with appropriate hip defence.

What are the variants of the Kani Basami?

Common variants: Standard trip (blocking or sweeping the support leg while driving the up…); Combination trip (chaining an inside trip with an outside trip when the opp…); Counter trip (using the trip as a counter when the opponent attacks); Clinch trip (executing the trip from a tight clinch position).

How effective is the Kani Basami in competition?

Kani basami was banned from IJF judo competition in 1980 after causing multiple serious knee injuries. It remains legal in IBJJF competition for brown and black belts and in some sambo rule sets.

What are common mistakes when doing the Kani Basami?

Top errors to watch for: Dropping straight in front of the opponent instead of to the side — they fall on top of you / Scissoring at the same level (both legs at the knees) instead of one high and one low / Not controlling the upper body, so the opponent can step over your legs / Applying too much lateral force to the knee joint — control the power to protect training partners.

What are other names for the Kani Basami?

The Kani Basami is also known as Kani Basami, Crab Scissors, Flying Scissors Takedown, Nozhnitsy.