Ura Shuto Uchi
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Shuto Uchi·Sean Askew
Ura Shuto Uchi
Shuto Uchi
SubFamily手刀打ち(Shutō-uchi)
TraditionalTranslation: knife hand strike
Overview
History & Origin
Shuto Uchi (手刀打ち, 'hand-sword strike') is the standard knife hand strike in karate, delivered with the outer edge of the open hand. [1] Funakoshi introduced shuto techniques to mainland Japan from Okinawa in the 1920s, including shuto uchi as a fundamental striking technique in his Shotokan curriculum. [1] Nakayama further codified the technique in Dynamic Karate, describing the precise hand formation and striking mechanics in detail. [2] The shuto uchi appears in numerous kata including Heian Shodan, Kanku Dai, and Bassai Dai. [3]
Effectiveness
Shuto uchi (knife hand strike) is a classic karate hand technique. [1]
Lineage
From Okinawan and Japanese karate. [1]
Competition Record
Used in karate kumite. [1]
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Biomechanical Mechanism
Primary Action — Striking with the heel of the palm — transfers force similar to a punch while reducing risk of hand fracture
Joints Involved — Wrist (extended, locked), shoulder (flexion/rotation), hips (rotation for power)
Force Vector — Linear or circular — same trajectory as equivalent punch but with palm contact
Safety Advantage — The palm heel absorbs impact across a larger area — lower risk of metacarpal fracture compared to closed-fist strikes
Position & Entry
From fighting stance — Extend the arm with fingers together, strike with the blade edge (ulnar side) of the open hand in a chopping arc
From close range — Short knife-hand strike to the neck, temple, or collarbone
Videos
1 video
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Ratings
Risk of injury to the person this technique is applied to
5
High5/10
Shuto/karate chop; targets neck, collarbone, temple
Skill level needed to execute this technique reliably
Intermediate
Whether this technique is allowed under major competition rule sets
Illegal
WBC/Boxing — Only closed-fist punches permitted {src— WBC Rules of Boxing}
Kyokushin — Only closed-fist strikes to body permitted {src— IKO Kyokushin Tournament Rules}
— WT — Prohibited
WT Competition Rules 2024PDF— WAKO — Closed fist only
WAKO Competition RulesPDFK-1/GLORY — Closed fist only {src— K-1/GLORY Kickboxing Rules}
Restricted
— WKF — Varies by technique — some open-hand strikes legal ...
WKF Competition Rules 2024PDF— ITF — Some knife hand techniques legal
ITF Competition RulesPDFLegal
— palm strikes, slaps permitted
Unified Rules of MMA, August 2025PDF— IFMA — Legal — palm strikes permitted in Muay Thai
IFMA Muay Thai RulesPDFTraining Notes
✓Shuto uchi is the karate outer knife hand strike — delivered with the edge of the hand from the little finger to the wrist
✓The shuto uchi can travel in a horizontal, diagonal, or downward arc
✓In Shotokan karate, the standard shuto uchi is thrown from the outside inward across the body in a diagonal arc
✓Keep the fingers pressed together, thumb tucked, and wrist locked at the moment of impact
✓The shuto uchi targets the neck (carotid sinus), temple, collarbone, or bridge of the nose
✓Funakoshi described the shuto as one of the essential hand techniques in karate-do
✓Condition the outer edge of the hand on the makiwara to develop a hardened striking surface
Common Mistakes
!Slapping with a loose hand instead of striking with a rigid knife edge
!Spreading the fingers on impact, risking jammed or broken fingers
!Aiming at the top of the skull — target the soft neck or temple areas
!Not locking the wrist — a bent wrist collapses on impact and causes injury
!Over-extending the reach and losing the structural alignment of the hand and arm
!Using excessive wind-up, telegraphing the technique
!Striking too softly in training and never developing the impact tolerance needed for the shuto
Related Techniques
Counter Techniques
Setup Chain
1Assume Fighting Stance — begin from a balanced position with guard up
2Generate Power — use hip rotation and weight transfer for maximum force
3Execute Strike — deliver the technique to the target with correct form
4Recover to Guard — return immediately to defensive position
Sources & References
Primary Source
Karate-Do Kyohan: The Master Text (Gichin Funakoshi, 1935)
1BookBoxing (Dempsey, 1950)
Alias sources — [1] Karate-Do Kyohan (Funakoshi, 1935) [2] Kukkiwon Taekwondo Textbook (Kukkiwon, 2006) [3] Dynamic Karate (Nakayama, 1966)
2BookMuay Thai: The Art of Fighting (Kraitus, 2002)
History sources — [1] Karate-Do Kyohan (Funakoshi, 1935) [2] Dynamic Karate (Nakayama, 1966) [3] Best Karate Vol. 3 (Nakayama, 1978)
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)
5CitationBoxing (Dempsey, 1950)
Alias sources — [1] Karate-Do Kyohan (Funakoshi, 1935) [2] Kukkiwon Taekwondo Textbook (Kukkiwon, 2006) [3] Dynamic Karate (Nakayama, 1966)
6CitationMuay Thai: The Art of Fighting (Kraitus, 2002)
History sources — [1] Karate-Do Kyohan (Funakoshi, 1935) [2] Dynamic Karate (Nakayama, 1966) [3] Best Karate Vol. 3 (Nakayama, 1978)
Community
Athletics
Requires
speed, power generation through kinetic chain, striking surface conditioning
Favours
athletic build with fast-twitch muscle fibres
Key muscles
varies by strike — hip rotators, shoulders, core
Sub-techniques
Frequently Asked Questions
How does the Shuto Uchi work?
A knife hand strike using the outer edge (pinky side) of the open hand, delivered in a chopping motion targeting the neck, collarbone, or temple.
Where does the Shuto Uchi come from?
Shuto Uchi (手刀打ち, 'hand-sword strike') is the standard knife hand strike in karate, delivered with the outer edge of the open hand. Funakoshi introduced shuto techniques to mainland Japan from Okinawa in the 1920s, including shuto uchi as a fundamental striking technique in his Shotokan curriculum.
Is the Shuto Uchi legal in competition?
Unified MMA: legal — Legal (palm strikes, slaps permitted); WBC/Boxing: banned — Only closed-fist punches permitted; WKF: restricted — Varies by technique — some open-hand strikes legal in kata, generally restric…; Kyokushin: banned — Only closed-fist strikes to body permitted; WT: banned — Prohibited; ITF: restricted — Some knife hand techniques legal; WAKO: banned — Closed fist only; K: banned — 1/GLORY — Closed fist only; IFMA: legal — Legal — palm strikes permitted in Muay Thai
How dangerous is the Shuto Uchi?
Danger rating 5/10. High — shuto/karate chop; targets neck, collarbone, temple
How do I set up the Shuto Uchi?
The standard setup chain: Assume Fighting Stance → Generate Power → Execute Strike → Recover to Guard.
How do I defend against the Shuto Uchi?
Standard counters include: Block — absorb the strike with a protective guard position / Evasion — move the target out of the strike's path / Counter-Attack — time an offensive response during the recovery phase of the strike.
What are the variants of the Shuto Uchi?
Common variants: Standard variation (primary execution of the strike from the most common stance); Power variation (modified mechanics for maximum force generation); Speed variation (minimised telegraph for a faster, harder-to-read attack); Counter variation (timed to exploit the opponent's offensive commitment).
How effective is the Shuto Uchi in competition?
Used in karate kumite.
What are common mistakes when doing the Shuto Uchi?
Top errors to watch for: Slapping with a loose hand instead of striking with a rigid knife edge / Spreading the fingers on impact, risking jammed or broken fingers / Aiming at the top of the skull — target the soft neck or temple areas / Not locking the wrist — a bent wrist collapses on impact and causes injury.
What are other names for the Shuto Uchi?
The Shuto Uchi is also known as Shutō-uchi, Knife Hand Strike, Sonnal Chigi, Chop.