Anterior Cruciate ligament (ACL) injury

Written By Alan Ng

ACL injury is one of the common injury that happened during sports. ACL tear or sprain occurs during sudden change in direction, pivoting or landing with knee in twisted position. Generally a “pop” sound is associated with ACL tear.

Symptoms of ACL tear:

  • Swelling in knee joint

  • Reduced in range of motion

  • Knee instability

  • Severe pain

  • Unable to weight bear

Risk factors:

  • Females: research has shown females tends to have a higher rate of ACL injury, which could be caused by difference in body anatomy and hormonal influence

  • Participating in certain sports that involves change in direction and pivoting

  • Muscles imbalance

  • Poor biomechanics of trunk, hip, knee and ankle motion

Diagnosis:

Physiotherapist can help diagnosis ACL tear with specific tests including Lachman test and Anterior Drawer test. To assess severity of tear Magnetic resonance imaging (MRI) should be done and to check if there are other structures involved in the injury.

ACL injury can takes up to 6-12 months for recovery. Progressive exercises and muscles retraining should be given to address risk factors such as muscles imbalance and poor biomechanics to help prevent another ACL injury. LifeMotion Physio is here in North Ryde to help you regain your movement and returning to your active lifestyle.

Alan Ng
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