MCL Injury
The medial collateral ligament (MCL) is one of the most commonly injured knee ligaments. Learn about causes, symptoms, and effective treatment options.
What is an MCL Injury?
The medial collateral ligament (MCL) is a band of tissue on the inside of your knee that connects your thighbone (femur) to your shinbone (tibia). It provides stability and limits the sideways movement of your knee.
MCL injuries typically occur when the knee is hit from the outside, forcing it inward. This is common in contact sports like football, soccer, and hockey. The good news is that most MCL injuries heal well without surgery.
Grades of MCL Injury
Grade 1 (Mild)
Ligament is stretched but not torn. Minimal pain and swelling with no instability.
Grade 2 (Moderate)
Partial tear of the ligament. Moderate pain, swelling, and some instability.
Grade 3 (Severe)
Complete tear of the ligament. Significant pain, swelling, and knee instability.
Symptoms
- Pain on the inner side of the knee
- Swelling along the inside of the knee
- Tenderness when touching the inner knee
- Feeling of instability or "giving way"
- Stiffness and difficulty bending the knee
- Popping sound at the time of injury
Common Causes
- • Direct blow to the outside of the knee
- • Twisting or pivoting movements
- • Awkward landing from a jump
- • Contact sports collisions
- • Skiing falls
Treatment Options
Most MCL injuries heal well with conservative treatment. Surgery is rarely needed.
RICE Protocol
Rest, Ice, Compression, and Elevation for initial management
Bracing
Hinged knee brace to protect and support the ligament during healing
Physical Therapy
Exercises to restore strength, flexibility, and stability
Surgery
Rarely needed; reserved for complete tears with persistent instability
Recovery Timeline
Grade 1
1-3 weeks to return to activities
Grade 2
3-6 weeks for recovery
Grade 3
6-8+ weeks, may require bracing
Related Conditions
Get your MCL injury evaluated
Schedule a consultation with Dr. Hunter to assess your MCL injury and create a treatment plan for optimal recovery.