Knee instability

Knee instability or laxity can be associated with damage to the ligaments that create stability to the knee.  Muscles damage can also create instability due to either weakness or poor contraction. Instability or the feeling of giving way is associated with injuries to the medial or lateral meniscus in the knee joint.

Swelling can also create a feeling of instability from an effusion and switch off or inhibit correct activation of muscles. Injuries that can cause knee instability are listed below:
  • ACL Sprain

    ACL Sprain

    Anterior Cruciate Ligament injury or 'ACL injuries' are common in contact sports and especially those that are combined with sudden change of direction such as soccer or football. Often ACL tears do not occur in isolation and are in most cases are associated with damage to other structures within the knee such as the cartilage or the collateral ligaments.

  • Patella Dislocation

    Patella Dislocation

    The patella can dislocate outside of its normal position, usually round the outside of the knee. It can also partially dislocate, called a subluxation.

  • Posterior Cruciate Ligament Injury

    The posterior cruciate ligament is important for stabilizing the knee and preventing it from bending back the wrong way.

  • Knee Sprain

    Knee Sprain

    A knee sprain is an injury or damage to any of the four ligaments which support the knee.

  • Osteochondral Knee Fracture

    Osteochondral Knee Fracture

    An Osteochondral fracture is a tear of the cartilage which covers the end of a bone, within a joint. It is also known as Osteochondritis Dissecans and is common in the knee joint, especially in association with other injuries such as ACL tears.

  • Unhappy Triad of the Knee

    Unhappy Triad

    The unhappy triad is a severe injury which involves damage to three of the four major ligaments in the knee.

  • Acute Knee Injuries

    An acute knee injury usually occurs suddenly through either trauma or a twisting action. Pain in the knee can vary in severity from very mild to very severe and this depends on the injury mechanism (how the injury occurred) and the forces involved during the impact. It is strongly advised not to carry on playing if you have acute knee pain as this can easily progress to a chronic pain or to more complex knee injuries.