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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