Kani Basami

What This Is

Kani Basami is a sacrifice takedown in which the attacker scissors their legs around the opponent’s legs — one leg sweeping forward at or above the knee, the other sweeping backward at or below it — to topple the opponent sideways using rotational force. Both players go to the ground simultaneously. It is a sacrifice technique: the attacker gives up their own base to execute it.

The technique is well-established in Sambo, present historically in judo (before being banned in IJF competition in 1980), and has experienced renewed interest in no-gi submission grappling during the leg lock era — the position the Kani Basami creates on landing provides a direct entry into ashi garami and heel hook positions.

Ability level: Elite. This is not a technique for practitioners without precise angle, timing, and spatial awareness. Executed at a wrong angle — particularly straight-on rather than from the side — it creates the conditions for serious knee injury to the opponent without any submission threat to prompt them to tap. The technical requirements are substantial, and the cost of imprecision is not a failed takedown but potential injury to a training partner or opponent.

Safety First — Elevated Risk

Both players are at risk: The attacker who misjudges the angle can injure not only the opponent but themselves — the takedown is a sacrifice that puts both bodies on the mat, and an incorrect angle during the landing creates injury mechanisms for the attacker’s own knees as well.

Injury Mechanism

Understanding why Kani Basami carries elevated injury risk requires understanding the geometry of the scissors motion:

The forward-sweeping leg traps the opponent’s near leg at or above the knee; the backward-sweeping leg traps the near leg at or below it. When the scissors motion is applied from the correct side angle — with the attacker’s body perpendicular to the opponent’s legs — the force rotates the opponent sideways using their leg as the pivot, which is how the takedown works as intended.

When applied from a straight-on or incorrect angle, the two sweeping legs apply force in opposite directions simultaneously on the opponent’s knee — one force above, one below, and the knee absorbs a lateral/rotational force it is not designed to withstand. This is distinct from the submission injury mechanism where force increases gradually — here the force is applied instantaneously at the moment of the scissors motion, and the defender’s knee is the structure absorbing it.

The critical safety principle: The angle is not a technique refinement — it is the safety requirement. A straight-on Kani Basami is not a less-effective version of the technique; it is the injury mechanism. There is no version of a straight-on Kani Basami that is safe.

Ruleset Context

IJF Judo: Banned since 1980 as a Kinshi Waza (prohibited technique). The ban followed the 1980 All Japan Championships, where several injuries resulted from the technique being used at the highest level of competition, prompting the IJF to prohibit it. The ban has been in place ever since.

IBJJF: Illegal at all levels in both gi and no-gi competition. This prohibition applies at all belt levels and all tournament categories.

ADCC: Banned at open tournament divisions. Legal specifically at ADCC Trials and ADCC World Championship adult advanced divisions — this rule was updated in April 2025. Practitioners who compete at ADCC events must confirm the current rule status for their specific division and event type.

Most sub-only formats (EBI-style, WNO, Polaris): Generally legal — [REVIEW] verify current ruleset status for each individual event, as sub-only format rules change between promotions and events.

FIAS Sambo: Legal. Kani Basami is a legal technique in Sambo competition and is used in the Sambo context as a direct entry into leg entanglements — this application is part of the technique’s renewed relevance in submission grappling.

Defence — If You Are the Target

The Kani Basami defence is pre-emptive. Once the scissors motion is committed, there is no mid-technique defence that reliably prevents the takedown or the knee stress:

Distance management: The technique requires the attacker to dive close and scissors their legs around the opponent’s legs. Maintaining distance — using active footwork and frames — is the most reliable defence. If the attacker cannot close to the required range, the technique cannot be applied.

Recognise the setup: The Kani Basami is most commonly set from a single leg defence or a Russian tie position — if you recognise the angle the attacker is seeking (circling to your side rather than engaging front-on), be alert to the entry.

Sprawl or hop: If the attacker is diving for the scissors motion, a sprawl (driving the hips back and the chest forward) or a hop (stepping the near leg back and away) can deny the leg positioning needed for the scissors. These responses require recognising the entry early.

Once the technique is in motion: If the scissors motion has started and the angle is correct, resistance creates more knee stress than compliance — do not try to fight the rotation. Go with the rotation to the mat; the injury risk comes from the knee being twisted against the direction of the takedown, not from the takedown itself when it is angled correctly.

The Invariable in Action

The Kani Basami mechanism differs from standard throws in that both players go to the mat — the attacker uses their own falling body weight as the force mechanism. The sacrifice element means the attacker’s centre of mass is also moving toward the mat, and it is the momentum of this movement combined with the scissors leg contact that creates the rotational force. This is what makes the technique so fast when correctly applied: the force is generated by the attacker’s falling weight, not by muscular strength against the opponent’s resistance.

Mechanism

The attacker approaches from a side angle — not front-on. They dive toward the mat on the near side, simultaneously:

Forward leg (near leg to the opponent): This leg drives forward at knee level or slightly above — contacting the opponent’s near leg at the knee or just above it, with a forward sweeping motion. The contact is at the outer surface of the knee or the thigh, slightly above knee level.

Rear leg: This leg drives backward at ankle or lower leg level — contacting the opponent’s near leg below the knee, with a backward sweeping motion. The contact is at the shin or ankle level.

Both legs apply force simultaneously — one forward above the knee, one backward below. The combined force creates a rotational moment at the knee that topples the opponent sideways toward the mat. Both players fall.

The critical angle requirement: The attacker must approach from the side, perpendicular to the opponent’s stance, not from the front. The side angle means the scissors force rotates the opponent sideways (around the knee as a pivot) rather than applying compression to the knee itself. A front-on approach applies the scissors force directly against the front-to-back axis of the knee — this is the injury mechanism.

Primary Setup — Single Leg Counter

The single leg takedown is the primary setup for Kani Basami in no-gi grappling. When the opponent drives a single leg, their weight commits forward and their near leg is in a stationary position. The attacker who is defending the single leg can circle out to the side — creating the side angle that Kani Basami requires — and apply the technique from that angle as the counter.

The sequence: Opponent drives single leg → attacker circles laterally (not straight back) to create the side angle → once the perpendicular angle is achieved, the attacker dives and applies the scissors motion. The forward-sweeping leg targets the knee level; the backward-sweeping leg targets the ankle.

Why the single leg creates this opportunity: The opponent driving a single leg has committed their weight forward and cannot easily reposition their near leg — it is the anchored base they are driving from. This makes their near leg a stable target for the scissors while their attention is on completing the takedown rather than defending the counter.

Why the side angle matters here specifically: The straight-on position from a single leg defence — behind the opponent’s leg — does not provide the side angle. The attacker must actively circle to the side, not back straight up. The circling step is the setup, not the scissors motion.

Secondary Setups

From Russian Tie / Arm Drag — Creating the Side Angle

The Russian tie and arm drag both create a side angle by pulling the opponent’s arm across — this rotates the opponent’s torso and exposes their near hip and leg from the side. From this rotated position, the Kani Basami can enter from the side angle that the arm drag created. The transition from arm drag to Kani Basami is fast — the arm drag creates the angle, the dive follows immediately.

From Underhook When Opponent Turns Sideways

When the underhook battle creates a position where the opponent is turned partially sideways — defending the underhook by turning — their near leg is exposed at the required angle. This is a reactive setup: the attacker recognises the sideways turn and enters Kani Basami from the angle the opponent’s defensive movement created.

The Angle — Why It Determines Everything

The side angle is not a technique preference — it is what separates a legal, safe application from an injury mechanism. This section expands on the injury mechanism discussion with the technical detail needed to understand and replicate the angle correctly.

Correct angle (side/perpendicular): The attacker’s body is perpendicular to the opponent’s line of stance — their chest points toward the opponent’s hip, not their chest. At this angle, the forward leg sweeps across the front of the opponent’s near leg (from outside to inside), and the rear leg sweeps from the back. The rotational force topples the opponent laterally. The knee is not being compressed front-to-back.

Incorrect angle (straight-on): The attacker’s body faces the opponent directly. At this angle, the forward leg contacts the front of the knee and the rear leg contacts the back of the knee. The scissors motion now applies simultaneous force to the anterior and posterior of the knee — the knee hyperextension or rotational tear mechanism. This is where the 1980 judo injuries came from.

How to confirm the angle: The attacker’s shoulder should be pointing toward the opponent’s leg at the moment of the dive — not their chest. If the chest is pointed toward the opponent, the angle is not achieved. If the shoulder (or the side of the body) is pointing toward the opponent’s leg, the side angle is correct.

Leg Entanglement Entry

One of the primary reasons Kani Basami experienced renewed interest in submission grappling during the leg lock era (2014 onwards) is the position it creates on landing: the near leg is already between the attacker’s legs when both players hit the mat, which is a direct entry into ashi garami or inside heel hook position without a separate entanglement setup.

The Sambo application — Kani Basami to leg lock — is the foundational combination. After the scissors takedown completes, the attacker keeps the near leg trapped between their legs and rotates to establish ashi garami (outside heel hook position) or inside ashi garami (inside heel hook position). The takedown and the leg lock setup are one continuous motion.

This combination is subject to the same ruleset restrictions as Kani Basami itself — and the leg lock applied afterward carries its own ruleset restrictions depending on the format. Both restrictions must be confirmed before this combination is used in competition. See: Ashi Garami and Inside Heel Hook.

Combination — Standing Kimura

The standing kimura can flow into Kani Basami when the kimura is defended. When the opponent commits weight forward to resist the kimura mat return — pressing into the attacker to prevent being taken down — their lateral exposure is created. The Kani Basami enters from the side while the kimura creates the forward pressure that the opponent is resisting.

This is an elite-level combination that requires mastery of both the standing kimura and Kani Basami independently. The ruleset status of Kani Basami must be confirmed for any competition context before this combination is attempted. See: Standing Kimura.

Common Errors

Training Note

This note is mandatory and applies at all times, not only in formal training contexts.

Kani Basami should be drilled initially from guard positions — specifically from guard-based scissors sweep positions — to learn the leg coordination and body mechanics without the injury risk of the standing application. The guard position removes the standing angle requirement and allows the scissors leg motion to be developed safely.

From standing, Kani Basami should be drilled only in extreme slow motion — near-zero speed — with an experienced training partner who understands the injury mechanism, has been told the angle requirement, and has agreed to the drill explicitly. Both players must be comfortable with the landing mechanics before any speed is added.

Never drill Kani Basami from standing at any speed above slow motion without an experienced partner in a controlled environment with adequate mat space. This is not a technique to explore casually in open mat. The gap between a correctly executed Kani Basami and an injurious one is the angle — and the angle cannot be corrected once the technique is in motion.

Ability Level Guidance

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