Knee Orthopedics: Enhancing Diagnostic Precision with GNRB & Dynelax Arthrometers

Uncover the potential of GNRB & Dynelax Arthrometers in redefining knee orthopedics. These arthrometers outperform MRI for precise ACL rupture diagnosis, integrating into orthopedic practice to improve treatment outcomes. Delve into case studies and the evolution of arthrometry in orthopedic healthcare.



In the specialized field of orthopedics, precise diagnosis of knee conditions, notably Anterior Cruciate Ligament (ACL) ruptures, is pivotal for formulating effective treatment strategies and ensuring favorable patient outcomes. While traditional diagnostic tools such as Magnetic Resonance Imaging (MRI) have been extensively used, they exhibit certain shortcomings in detecting partial ACL ruptures with utmost accuracy. The introduction of GNRB & Dynelax Arthrometers marks a significant stride in orthopedic diagnostics, addressing the limitations inherent in conventional methods and offering a heightened level of sensitivity in assessing knee laxity.

The GNRB & Dynelax Arthrometers utilize cutting-edge technology to gauge knee laxity with exceptional precision, assisting orthopedic surgeons in the thorough evaluation of knee joint stability. Their demonstrated effectiveness in diagnosing partial ACL ruptures renders them indispensable tools in orthopedic departments, promoting a culture of superior diagnostic accuracy and patient-focused care.

This page explores the integration of GNRB & Dynelax Arthrometers within the realm of orthopedic surgery, examining their operational dynamics, advantages in clinical settings, and their consequent positive impact on treatment planning and patient rehabilitation. Through an in-depth analysis, we aim to elucidate how these advanced arthrometers are not merely enhancing the quality of orthopedic diagnostics, but also advancing the healthcare community towards elevated standards of patient care and treatment efficacy.

Embark on an insightful journey into the evolving domain of orthopedic diagnostics, as we unveil how modern innovations like the GNRB & Dynelax Arthrometers are reshaping the benchmarks of accuracy and trustworthiness in diagnosing knee ailments.

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A doctor writing on a white file. Arthrometer Rehabilitation Tech.
a patient looking at theipad of a doctor.
Knee Orthopedics: orthopaedic surgeon
ACL Research/study: orthopedic surgeon with gloves and blood tissue.
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GNRB & Dynelax Arthrometers: Pioneering Precision in Knee Orthopedics

The introduction of GNRB & Dynelax Arthrometers marks a significant milestone in orthopedic diagnostics, especially in detecting partial ACL ruptures with higher sensitivity compared to traditional MRI methods. These arthrometers excel in quantitatively measuring knee laxity, providing invaluable data for accurate diagnosis.

Knee Ligament Arthrometer Device

A groundbreaking innovation by Genourob is the creation of Dyneelax, an arthrometer that not only analyses translation but pioneers in analyzing rotation, a facet never explored before. This dynamic analysis, especially the rotation analysis, heralds a new paradigm in understanding knee mechanics, enabling orthopedic surgeons to plan surgeries with unprecedented precision. By assessing the knee in a more holistic and dynamic manner, the Dyneelax facilitates a more nuanced understanding of knee injuries, aiding in better treatment planning.

Furthermore, analyzing rotation could potentially unveil new insights into how different ligaments and structures within the knee contribute to overall joint stability. This could also help in identifying other underlying knee conditions or foreseeing potential complications that might arise post-surgery. By comprehending the rotational dynamics of the knee, surgeons could better predict the surgical outcomes and possibly reduce the risk of subsequent injuries.

In essence, the GNRB & Dynelax Arthrometers not only bolster diagnostic accuracy but also enrich the orthopedic surgeon’s understanding of knee mechanics, thereby enhancing the surgical planning and ultimately leading to improved patient outcomes.

Enhanced Diagnostic Accuracy

Superior sensitivity in detecting partial ACL ruptures compared to traditional MRI methods.

Dynamic Knee Analysis

Unique capability of analyzing both translation and rotation, offering a comprehensive view of knee mechanics.

Precision Surgical Planning

Facilitates precise surgical planning by providing detailed information on knee laxity and rotational dynamics.

Non-Invasive Assessment

Offers a non-invasive, patient-friendly method to accurately assess knee stability.

Quick Diagnostic Process

Expedited diagnostic process enabling timely intervention and treatment (10min).

Objective Data Collection

Provides objective, quantifiable data essential for informed decision-making in treatment planning.

Reduced Risk of Further Injury

Early and accurate diagnosis helps mitigate the risk of further injury and optimizes recovery trajectory.

Potential for New Insights

Rotation analysis could unveil new insights into knee joint stability and underlying conditions.

Integrating GNRB & Dynelax Arthrometers in Orthopedic Surgery

The integration of GNRB & Dynelax Arthrometers within the orthopedic surgery realm signifies a progressive step towards refined diagnostic techniques and optimized patient care. Here’s how these innovative arthrometers are reshaping the diagnostic landscape in orthopedic surgery:

Streamlined Diagnostic Process

With the capability to provide quick and accurate assessments of knee laxity, the GNRB & Dynelax Arthrometers facilitate a streamlined diagnostic process. This expeditious analysis is crucial in cases requiring immediate intervention, ensuring that treatment plans are devised and executed in a timely manner.

Precision in Treatment Planning

The detailed insight into knee mechanics, especially the rotational analysis provided by the Dynelax, allows for a more nuanced understanding of the injury. This, in turn, enables orthopedic surgeons to tailor treatment plans with a high degree of precision, ensuring that surgical interventions are optimally aligned with the patient’s unique anatomical and injury specifics.

Enhanced Patient Consultation

Armed with objective data from the GNRB & Dynelax Arthrometers, surgeons can engage in more informative consultations with patients. The clear, quantitative data helps in elucidating the extent of injury and the proposed surgical intervention, fostering a transparent and educative dialogue between the surgeon and the patient.

Post-operative Assessment

Post-surgical recovery and rehabilitation are pivotal phases in the patient’s journey towards full recovery. The GNRB & Dynelax Arthrometers can be instrumental in assessing the effectiveness of surgical interventions and the progress of rehabilitation, aiding in any necessary adjustments to the recovery regimen.


By reducing the reliance on more expensive diagnostic modalities like MRI, and expediting the diagnostic process, the GNRB & Dynelax Arthrometers can contribute to cost savings. This is not only beneficial for the healthcare facility but also alleviates the financial burden on patients.

Educational Value

The integration of these arthrometers can also serve as an educational tool for orthopedic residents and fellows. The hands-on experience and the wealth of data provided by these arthrometers enhance the learning experience, cultivating a deeper understanding of knee pathologies and the impact of various treatment approaches.

Research and Development

The wealth of data generated by the GNRB & Dynelax Arthrometers can be harnessed for research purposes, potentially leading to new discoveries in orthopedic surgery techniques, and further advancements in arthrometer technology.

In summary, the GNRB & Dynelax Arthrometers are not merely diagnostic tools, but valuable assets that augment the orthopedic surgical practice, enriching the diagnostic process, surgical planning, patient engagement, and the broader educational and research endeavors within the orthopedic community.

Together, We Achieve

The Dyneelax isn’t just an arthrometer, it’s a gateway to enhanced surgical precision and improved patient outcomes.

Discover Proven Outcomes

Case Studies

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2023 - GNRB® laximeter with magnetic resonance imaging in clinical practice for complete and partial anterior cruciate ligament tears detection: A prospective diagnostic study with arthroscopic validation on 214 patients.

DOI: 10.1016/j.knee.2023.03.017
Theo Cojean, Cecile Batailler, Henri Robert, Laurence Cheze
CHU Nantes, CHU Angers, CH Laval (French Hospitals)
A doctor writing on a white file. Arthrometer Rehabilitation Tech.
2023 - Sensitivity, repeatability and reproducibility study with a leg prototype of a recently developed knee arthrometer: The DYNEELAX®

DOI: 10.1016/j.medntd.2023.100254
Theo Cojean, Cecile Batailler, Henri Robert, Laurence Cheze
Université Gustave Eiffel, Lyon, France

Don’t just take our word for it


Future Implications

The journey of innovation continues beyond the current capabilities of the GNRB & Dynelax Arthrometers, paving the way for a future where orthopedic diagnostics and treatment planning reach new heights of precision and effectiveness. One of the promising developments underway is the introduction of a novel module aimed at associating tibial translation and tibial rotation, which is poised to further revolutionize the understanding and treatment of knee pathologies.

Advanced Diagnostic Insight:

The forthcoming module enriching the GNRB & Dynelax Arthrometers with the ability to associate tibial translation and rotation will provide a more holistic understanding of knee joint mechanics. This advanced insight is critical for diagnosing complex knee conditions, allowing for a more nuanced analysis that could unveil underlying issues not apparent with current diagnostic methods.

Precision-Tailored Treatment Planning:

With a richer diagnostic picture, orthopedic surgeons can devise treatment plans that are tailored to the individual kinematics of each patient's knee. This level of personalized treatment planning is aimed at optimizing surgical outcomes and speeding up the recovery process.

Enhanced Surgical Techniques:

The knowledge gained from the associated tibial translation and rotation analysis could lead to the refinement of surgical techniques. Surgeons might discover new approaches to ligament repair and reconstruction that align better with the natural biomechanics

Research & Development Catalyst:

The addition of this module could catalyze further research and development in orthopedic diagnostics. The data generated might unveil new areas of exploration, fostering a culture of continuous improvement and innovation within the orthopedic community.

Education and Training:

As this module becomes an integral part of orthopedic diagnostic toolkit, it will also serve as a valuable educational resource. It will provide trainees and seasoned orthopedic professionals alike with a deeper understanding of knee mechanics, enhancing the educational landscape of orthopedic medicine.

Cost Efficiency and Patient Satisfaction:

By enabling more precise diagnoses and personalized treatment plans, this module could contribute to cost efficiency by potentially reducing the need for repeat surgeries and long-term rehabilitation. Furthermore, improved surgical outcomes and a smoother recovery journey will likely enhance patient satisfaction and overall experience.


The incorporation of GNRB & Dynelax Arthrometers is a significant stride in orthopedic diagnostics, offering superior accuracy in detecting partial ACL ruptures and providing invaluable insights into knee mechanics. These advancements streamline the diagnostic process, aid precise surgical planning, and foster enhanced patient consultations. With the upcoming module associating tibial translation and rotation, a new horizon of diagnostic precision and personalized treatment planning is unveiled. The GNRB & Dynelax Arthrometers are not merely diagnostic tools, but pivotal assets in elevating orthopedic care, marking a promising pathway towards improved patient outcomes and enriched orthopedic practice.

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To assist healthcare professionals in leveraging the GNRB & DyneeLax arthrometers to their fullest potential, we have curated a collection of resources. These are designed to provide comprehensive insights, from basic setup and operation to in-depth diagnostic procedures. These resources aim to facilitate seamless integration of these innovative tools into your diagnostic practice, ensuring accurate and timely identification of knee ligament injuries.

Research Articles & Clinical Studies:

2023 - GNRB® laximeter with magnetic resonance imaging in clinical practice for complete and partial anterior cruciate ligament tears detection: A prospective diagnostic study with arthroscopic validation on 214 patients.
DOI: 10.1016/j.knee.2023.03.017

2023 - Sensitivity, repeatability and reproducibility study with a leg prototype of a recently developed knee arthrometer: The DYNEELAX®
DOI: 10.1016/j.medntd.2023.100254

2019 - Anterior knee translation measurements after ACL reconstruction are influenced by the type of laximeter used.
DOI: 10.1007/s00167-020-05950-5

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