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  • Q&A with Australian Health Practitioners

    How is an ACL rupture diagnosed?

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  • Mr Austin Vo

    Orthopaedic Surgeon

    Mr Austin Vo is a highly qualified Melbourne trained Orthopaedic Surgeon with expertise in all aspects of shoulder and knee surgery. His international subspecialty training … View Profile

    An ACL injury can be diagnosed with a thorough physical examination of the knee and diagnostic tests such as X-rays, MRI scans and arthroscopy. X-rays may be needed to rule out any fractures. In addition, your doctor will often perform the Lachman’s test to see if the ACL is intact. During a Lachman test, knees with a torn ACL may show increased forward movement of the tibia and a soft or mushy endpoint compared to a healthy knee.

    Pivot shift test is another test to assess ACL tear. During this test, if the ACL is torn, the tibia will move forward when the knee is completely straight and as the knee bends past 30° the tibia shifts back into correct place in relation to the femur.

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