Knee Ligament Injury
Knee ligament injuries are sprains or tears of the strong bands that hold the knee together, such as the collateral or cruciate ligaments. They often follow a twist or direct blow.
Causes & risk factors
- Twisting the knee during sport
- Direct blow to the side of the knee
- Awkward landing or fall
- Sudden change of direction
- Road traffic accidents
Common symptoms
- Knee pain
- Swelling soon after injury
- Knee feeling loose or unstable
- Difficulty bearing weight
- Reduced movement of the knee
Tests & diagnosis
- MRI
- X-ray
- Clinical stability tests
- Knee arthroscopy
Treatment & management
- Rest, ice, compression and elevation
- A brace to protect and support the knee
- Physiotherapy to restore strength and stability
- Pain relief as advised
- Surgery for complete tears or persistent instability
When to see a doctor urgently
- Knee that gives way or feels unstable
- Severe swelling or inability to bear weight
- A deformed or clearly abnormal-looking knee
- Numbness or cold sensation below the knee
Not a diagnosis. MedDroid gives general educational information about knee ligament injury. It cannot examine you, diagnose or prescribe — always confirm with a qualified doctor.
Frequently asked questions
How do I know if it is a sprain or a tear?
A doctor distinguishes them by examination and imaging such as MRI. Sprains stretch the ligament, while tears involve partial or complete rupture.
Can I walk on an injured knee ligament?
Mild sprains may allow careful walking, but instability or severe pain means you should rest the knee and get it assessed.
Explore more
MedDroid is an AI medical assistant and can make mistakes. It provides general health information, not a diagnosis or medical advice — always consult a qualified clinician. In an emergency, contact your local emergency number immediately.