What is a knee ligament injury?

A knee ligament injury happens when one or more of the strong bands that support your knee are stretched or torn. These ligaments help keep your knee stable and allow it to move properly. Injuries can be mild or severe, depending on how much damage has occurred.

Common causes include:

• Twisting the knee suddenly
• Quick changes in direction
• Direct impact on the knee
• Overextending the joint

Symptoms

Knee ligament injuries often occur during sudden or forceful movements. They are common in sports but can happen to anyone.

Common symptoms include:

• Pain in the knee
• Swelling or stiffness
• A feeling that the knee is unstable or may give out
• Trouble bending or straightening the leg
• Difficulty walking or turning
• A popping sound at the time of injury

How is it diagnosed?

Your provider will examine your knee and ask about how the injury happened. They may gently move your knee in different ways to check for looseness or instability.

Imaging tests are often used to confirm the diagnosis:

• MRI helps show ligament damage
• X-rays check for broken bones

How is it treated?

Treatment depends on how serious the injury is and which ligament is affected.

Treatments may include:

• RICE – rest, ice, compression, and elevation
• Bracing
• Physical therapy
• Surgery to repair or reconstruct the ligament

Recovery time can vary. Mild injuries may improve in a few weeks, while more serious injuries can take several months. Following your care plan is important for a safe return to activity.