Kneebar

Also known as:
Hiza Juji Gatame

What is the Kneebar? (Definition & Historical Context)

The kneebar is a straight leg lock submission designed to hyperextend the opponent's knee joint. Mechanically similar to an Armbar, the kneebar involves isolating and controlling the opponent's leg while driving the hips forward to extend the knee beyond its natural range. Historically, kneebars have been utilized across various grappling disciplines, including Judo (known as hiza-juji-gatame), Sambo, and catch wrestling, where they have long been recognized as effective leg-lock techniques. In contemporary Brazilian Jiu-Jitsu competitions, kneebars are typically permitted in advanced divisions, such as IBJJF brown and black belt categories. Additionally, no-gi submission grappling events like ADCC 2022 generally allow kneebars across all skill levels.

Biomechanics and Principles of the Kneebar

The kneebar operates by isolating the opponent's leg and using the attacker's hips as a fulcrum to hyperextend the knee joint. Proper execution requires tightly clamping the thighs just above the opponent's knee, effectively controlling the "knee line." The opponent's kneecap should face the attacker's torso, with their foot secured tightly against the chest or under an armpit to prevent rotation. Pinching the knees together firmly immobilizes the leg, allowing the attacker to extend their hips forward while pulling the opponent's lower leg in the opposite direction. This linear extension places immense stress on the knee's ligaments—particularly the ACL, PCL, collateral ligaments—and the joint capsule. Precise hip alignment and eliminating slack are critical, as even slight misalignment significantly reduces the submission's effectiveness.

Common Setups and Entries to the Kneebar

Kneebars can be initiated from numerous positions and scenarios:

Top Position Entries

  • A classic entry occurs from the top half guard, where the attacker backsteps their free leg over the opponent's trapped leg, immediately isolating it for the submission.

Bottom Guard Entries

  • Bottom guard positions such as K-guard, inverted guard, and Reverse De La Riva offer opportunities to scoop and isolate the opponent's leg as they attempt to pass.

Scrambles and Transitions

  • Kneebars frequently emerge during scrambles or as follow-up attacks when opponents defend against other leg submissions like the Heel Hook or Straight Ankle Lock.

Common Mistakes to Avoid When Applying the Kneebar

Several common errors can compromise the effectiveness of the kneebar:

  • Inadequate Knee Control: Failing to tightly clamp and control the opponent's knee above the hips allows them to rotate or escape.
  • Rushing the Finish: Attempting the submission prematurely without fully establishing positional dominance often results in losing control.
  • Poor Hip Alignment and Excess Space: Even minor misalignment or gaps between the attacker and opponent's leg significantly reduce leverage and breaking power.
  • Loose Knee Pinch: Insufficient knee pinch allows the opponent to rotate and escape. Constant pressure and control are essential.

Effective Defenses and Escapes from the Kneebar

Defending against the kneebar requires early recognition and proactive measures:

  • Early Knee Line Awareness: Preventing the leg from being fully isolated is the best initial defense. Keeping the knee bent and preventing it from crossing the attacker's hip line neutralizes the threat.
  • Foot Rotation and Hip Pressure: If caught, rotating the foot outward (toes pointed sideways) and driving the hips into the attacker can disrupt their extension force, creating space to escape.
  • Utilizing Free Limbs: Using the free leg or hands to push against the attacker's hips, buttocks, or grip can create leverage to free the trapped knee.
  • Rolling or Spinning Out: If the kneebar is not fully extended, rolling or spinning toward the attacker can relieve pressure and help unwind the leg entanglement.

Strategic Applications and Tactical Usage of the Kneebar

The kneebar is strategically versatile, effective from both top and bottom positions:

Top Position Setups

  • Commonly executed from top half guard, side control, or mount transitions, attackers can quickly isolate and attack exposed legs during positional advancements.

Bottom Guard Counter-Attacks

  • Practitioners frequently utilize kneebars from bottom positions like half guard or single-leg X-guard, capitalizing on opponents' passing attempts and weight distribution.

Chaining with Other Leg Submissions

  • Advanced competitors often chain kneebars fluidly with other leg attacks, such as heel hooks, toe holds, and calf slicers, making the kneebar a critical component of comprehensive leg-lock strategies.

Gi vs. No-Gi Contexts

  • Kneebars remain effective in both gi and no-gi competitions, though their legality and frequency of use may vary depending on specific rulesets and competition formats.

Tips for Mastering the Kneebar (Key Details for Success)

To effectively master the kneebar, practitioners should:

  • Prioritize precise hip placement and maintain tight control of the knee line at all times.
  • Develop sensitivity to opponents' defensive movements and counters, allowing quick adjustments and follow-up attacks.
  • Regularly practice chaining kneebars with other leg submissions to enhance versatility and unpredictability.
  • Drill positional entries and transitions extensively to improve timing, efficiency, and overall effectiveness of the submission.

Kneebar Submission Statistics

Gi vs No-Gi Distribution

343 Submissions
Gi
202 (58.9%)
Nogi
141 (41.1%)

Kneebar Specialists

Percentage of their total submission wins

RNKATHLETE %
1
James Puopolo
24.6%
2
Bernardo Faria
11.2%

Percentage of All Submissions

2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
Percentage (%)
Year
Gi
Nogi
Showing the percentage of submissions won using Kneebar relative to all submission victories in Gi and No-Gi contests

Matches Won by Kneebar

FightersEventDateWeight
Deandre Corbedef.Josh Cisneros2025 Sapateiro World Championship Grand Prix
2025
Mar 16
160 lb
Jacob Polanskydef.Andrew Anderson2025 Fight to Win Fight 274
2025
Mar 7
Andy Murasakidef.Daniel SathlerUFC Fight Pass Invitational 10
2025
Mar 6
Sheliah Lindseydef.Sharon Meguira2025 Finishers Survivor Series
2025
Mar 2
Keshon Mccoydef.Josiah Elijah Hepworth2025 Fight to Win 272
2025
Feb 7
Richar Nogueiradef.Dan Dykeman2025 Fight to Win 272
2025
Feb 7
Alexander Montalvodef.Nelson X Gonzalez2025 Fight to Win 270
2025
Jan 24
Samantha Brissdef.Sarah Wellumson2024 Fight to Win 259
2024
Sep 13
Tye Ruotolodef.Jason Nolf2024 Craig Jones Invitational
2024
Aug 16
173lbs
Brandon Irwindef.Michael Swann2024 Fight to Win 257
2024
Jul 26
Amy Lynn-Camillidef.Willow Crawford2024 Finishers Summer Bash / WNO Qualifier
2024
Jul 20
Adriano Diasdef.Amado Flores2024 Fight to Win 256
2024
Jul 19
Glenn Donoghuedef.Shawn Flowers2024 Fight to Win 247
2024
Mar 1
Anna Castellsdef.N. Tavares2023 IBJJF Rome Open
2023
Oct 27
Open Weight
Hakuri Ishigurodef.Mei Yamaguchi2023 QUINTET4
2023
Sep 10
Taisei Sakurabadef.Masato Uchishiba2023 QUINTET4
2023
Sep 10
Trinity Pundef.Lauren Sears2023 Emerald City Invitational
2023
Apr 29
Nicole Mathewdef.Emily Sanchez2023 Rise Invitational 11
2023
Apr 1
135lbs
Andre Setterdef.Josh Flores2023 Rise Invitational 11
2023
Apr 1
Luiza Montierodef.Janaina Maia Lebre2023 Pan Jiu Jitsu IBJJF Championship
2023
Mar 22
Lightweight