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  • Why buy a KT 1000 arthrometer when you can get a Dyneelax or GNRB? Did I tear my ACL? TOP 6 ACL diagnostic tests KT-1000 / KT-2000 / GNRB comparison Sports related to ACL Injuries 11 ACL fast facts Arthrometers: Enhance knee injury treatment Knee Stability/Instability Diagnostic Device Knee physical exams
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  • ACL Rehab: How are arthrometers crucial to recover from ACL Surgery? New arthrometer NEW GNRB / ROTAM Research Studies GNRB Knee Arthrometer: More than just objective results on the ACL... The Future of Treating ACL Tears: Arthrometers Where can I order a KT1000 knee ligament arthrometer? KT-1000 vs. GNRB video: Testing the ACL with both arthrometers NEW GNRB STUDY KT1000 Arthrometer : Test Knee Laxity ESSKA BEST E-POSTER AWARD - GNRB ARTHROMETER Back pain and its associated problems Knee Laxity Arthrometer GNRB involved in more than 30 scientific studies What is Knee Ligamentous Laxity? Back Pain Rehabilitation - Spineo Patient Feedback New Funding from the European Union for the DYNEELAX Project AS MONACO football club has a DYNEELAX ! Memphis Depay, from FC Barcelona, being tested on our Arthrometer! What are the benefits of using knee laxity arthrometers? What is Dyneelax? Knee Ligament Analysis: ACL, PCL, LCL, MCL Assessment Device What is Knee Laxity? Study - Arthrometers better than MRI when diagnosing partial ACL tears Mastering Knee Examination: The Role of Arthrometers in Diagnosing Ligament Injuries Demystifying Anterior Cruciate Ligament (ACL) Injuries: Causes, Symptoms, and Treatment Revolutionizing Knee Assessment: The Dyneelax Knee Laxity Arthrometer Unraveling Knee Laxity: The Crucial Role of Arthrometers in Diagnosis and Treatment Mastering the Lachman Test: Detecting ACL Tears Unmasking Partial ACL Tears: The Edge of Dyneelax & GNRB Arthrometers Over MRI The Anterior Cruciate Ligament (ACL): A Brief Overview New Website ! Visit Arthrometer.com
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    ANTERIOR CRUCIATE LIGAMENT (ACL) INJURY/TEAR

    Whether you're a professional sports player or a just an amateur, you're never safe from knee injuries. Speaking of knee injuries, let's highlight the one that occurs most often: the anterior cruciate ligament (ACL) injury/tear. 

    What is an ACL injury?

    Athletes who regularly practise sports such as football, rugby or basketball tend to show a higher risk at tearing their ACL because of the movements they inflict on their knees but it should still be known that sports amateurs and even people who do not practise sport are also often exposed to this type of injury.

    The ligaments present in our knees are strong bands of tissue that connect one bone to another. The ACL in particular is one of the two ligaments that crosses in the middle of the knee and connects the femur (thighbone) to the tibia (shinbone). This cruciate ligament is more or less responsible for the stability of the knee and should therefore be closely analysed when a tear is suspected.

    Causes of an anterior cruciate ligament (ACL) injury

    The anterior cruciate ligament can be injured in several ways:

    • Sudden change of direction.
    • Suddenly stopping.
    • Landing from a jump incorrectly.
    • Direct contact or collision, such as a football tackle.
    • Slowing down while running.
    • Pivoting with your foot firmly planted.

    Symptoms of an anterior cruciate ligament injury

    The symptoms of an ACL injury usually include:

    • A loud "pop" or a "popping" sensation in the knee.
    • Swelling that begins within a few hours.
    • A feeling of instability or "giving way" with weight bearing.
    • Severe pain and inability to continue activity.
    • Loss of range of motion.

    How can we examine the ACL?

    There are several techniques available for assessing the ACL:

    GNRB arthrometer

    GNRB arthrometer

    Arthrometry/Laximetry


    Running a diagnosis on the anterior cruciate ligament state using an arthrometer is nowadays becoming more and more present around the world. Arthrometers indeed reproduce the physical examination tests but with objective results and in a controlled manner. The first arthrometer created was the KT-1000 and its technology is based on the anterior drawer test. To diagnose a torn ACL, this device would emit a sound when the displacement between the tibia and the femur would be superior to 3mm at 134N meaning the anterior cruciate ligament is torn.

    This device was used a lot on a worldwide scale but it quickly showed its limitations especially in terms of test reproducibility and precision. This is one of the reasons why Genourob created its own arthrometer the GNRB, which is the first automated anterior drawer test arthrometer /Laximeter that performs dynamic analysis. A GNRB test indeed allows diagnosis of the ACL's state by applying several forces on the tibia and analyzing its displacement. Besides, this arthrometer can be used in the pre-surgery and post-surgery phase of patient management.

    Physical examination


    This technique is perhaps the simplest one applied by the orthopaedic community. During this examination, the doctor will check all the structures of the injured knee by performing tests such as the Lachman test, the drawer test, etc. He will then perform the same tests on the healthy knee and compare the results in order to have a proper diagnosis of the state of the ACL.

    Physical examination is perhaps the technique which is most used all around the world but it is not close at being the most efficient one as the results are not objective and it depends on user experience, patient muscle activity and sensibility.

    Magnetic resonance imaging (MRI) scan

    This device creates images of soft tissues like the anterior cruciate ligament (ACL). However, blood surrounding the anterior cruciate ligament can make it difficult to assess a torn ACL. Besides, tests that are done with this device are also static as the patient lies still while the examination.