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Effective Ways to Treat an MCL Sprain
From at-home care to physical therapy and surgery, here’s what you need to know about healing an MCL sprain.

The medial collateral ligament (MCL) is a strong band of tissue that helps stabilize the inside of your knee. It runs from the thigh bone (femur) to the shin bone (tibia) and prevents the knee from bending inward. MCL sprains are common among athletes and often result from sudden twisting, quick directional changes, or direct blows to the knee.
What Is an MCL Sprain?
An MCL sprain occurs when the ligament is overstretched or partially torn. Symptoms often include:
Pain on the inside of the knee
Swelling or bruising
Knee stiffness or reduced range of motion
A feeling of instability or buckling
Doctors typically classify MCL sprains into three grades:
Grade 1: Mild stretch with minimal instability
Grade 2: Partial tear with some looseness or instability
Grade 3: Complete tear with significant instability
Treatment Options for an MCL Sprain
RICE Method
The first step in treating an MCL sprain is reducing inflammation. The RICE method Rest, Ice, Compression, and Elevation can be used within the first 48–72 hours:
Rest: Avoid strenuous activity and sports.
Ice: Apply ice packs for 10–20 minutes every hour as needed.
Compression: Use an elastic bandage or sleeve to limit swelling (without cutting off circulation).
Elevation: Keep the leg raised above heart level when possible.
Medications
Over-the-counter nonsteroidal anti-inflammatory drugs (NSAIDs) like ibuprofen or naproxen can help reduce pain and swelling. Always consult a healthcare provider before prolonged use due to potential side effects like stomach irritation or increased cardiovascular risk.
Bracing
For Grade 1 or some Grade 2 sprains, a hinged knee brace is often recommended to prevent excessive inward motion while allowing gentle knee bending. Braces are typically worn for several weeks during healing.
Physical Therapy
Rehabilitation is crucial to restore knee strength and flexibility. A physical therapist may guide you through:
Gentle range-of-motion exercises early in recovery
Strengthening routines for the quadriceps, hamstrings, and hip muscles
Balance and stability exercises
Gradual return to running, jumping, or sport-specific movements
Recovery can take 6–12 weeks for mild sprains, while more severe injuries may require three months or longer.
Surgery
Most MCL sprains heal without surgery, but a Grade 3 tear or combined ligament damage (e.g., ACL tear) may require arthroscopic surgery to repair or reconstruct the ligament. Post-surgery rehabilitation includes bracing, gradual mobility exercises, and several months of physical therapy.
When to See a Doctor
Seek medical care if you experience:
Significant swelling or bruising within hours of the injury
Difficulty walking or bearing weight
A feeling that your knee is “giving way”
No improvement after a few days of home treatment
Prompt diagnosis can prevent further damage and ensure proper healing.
Key Takeaways
An MCL sprain can range from a mild stretch to a complete tear, but with proper care including rest, physical therapy, and, in severe cases, surgery most people can fully recover. Early treatment and professional guidance are key to regaining stability and function.
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