Lateral Collateral Ligament (LCL) Injury
An injury to the lateral collateral ligament (LCL), which stabilizes the outer knee. It’s typically caused by a forceful blow to the inner knee.

Symptoms
- Pain on the outer side of the knee
- Swelling or bruising around the knee
- Instability, especially during side-to-side movements
- Stiffness in the knee joint
- Tenderness along the outer knee
Causes & Risk Factors
- Direct impact to the inside of the knee
- Sudden twisting movements
- Sports injuries
- Overuse of lateral movement
- Poor leg alignment
Diagnosis
- Physical exam (varus stress test)
- MRI for ligament damage
- X-rays to assess bones
- Assessment of gait and knee mechanics
Effective Treatment Options
- RICE (Rest, Ice, Compression, Elevation)
- Knee bracing
- Physical therapy
- Surgical repair in severe cases
- Activity modification during healing
Frequently Asked Questions
How serious is an LCL injury?
It ranges from mild to severe, depending on the tear extent and associated injuries.
Can LCL heal without surgery?
Yes, many mild to moderate injuries heal with conservative care.