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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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    Video: How to perform an Anterior Drawer Test

    Lachman Test: Clinical test for ACL assessment

    The Anterior Drawer test is a clinical examination test destined to diagnose injuries associated to the anterior cruciate ligament (ACL). While running this physical exam, the clinician pulls the tibia towards himself while the patient sits in a supine position. After performing the test on both knees, a significant displacement differential of the tibia between both knees usually indicates an injured ACL. Watch the video below to see how it is performed.

    Video explanation:

    In this video, the Anterior Drawer Test that is performed is negative as the clinician feels that the tibia is held backwards even though he applies a force on the tibia. 

    The patient is placed in supine position with his hips and knee respectively flexed to 45 and 90 degrees. The examiner positions himself in front of the involved knee and should grasp the tibia just below the joint line of the knee. The examiner's thumbs should be placed along the joint line on both sides of the patellar tendon. Once correct positioning of both hands in done, the tibia is pulled forward to assess the amount of anterior translation of the tibia.

    An intact ACL should prevent the anterior translation from happening (a firm endpoint can be felt) while an ACL-deficient knee will demonstrate an increased anterior translation. The so-called firm end point is also absent if the ACL is torn.

    This test is usually considered less reliable, les sensitive and inferior to the Lachman Test. In the continuity of what is indicated in the video, it relies on many subjective factors such as:

    • The clinician's experience
    • Muscle relaxation
    • Inherent knee variability

    It is therefore recommended to apply other objective methods of ACL assessment such as using an arthrometer to confirm the diagnosis or follow the state of the ACL graft over time after surgery.

    Advantages of using arthrometers for treating knee ligament injuries

    Below are the main advantages of using arthrometers for treating injuries related to the ACL:

    • Objective results: Keep an organized ACL database on your patients
    • Pre/Post surgery use: Confirm correct diagnosis and guarantee knee stability after surgery
    • Precise assessment: Answer your patients' exact needs
    • Enhanced communication: Gain patient trust and optimize professional communication
    • Reproducible / None-invasive test: Test your patient correctly and rigorously  compare results

    To learn more on these advantages, read our article explaining how arthrometers enhance the treatment delivered to patients suffering from knee ligament injuries or