A mild to moderate knee ligament injury may heal on its own, in time. To speed the healing, you can:Rest the knee. Avoid putting much weight on your knee if it’s painful to do so. You may need to use crutches for a time.
Ice your knee for 20 to 30 minutes every 3 to 4 hours to lessen the pain and swelling. Keep doing it for 2 to 3 days, or until the swelling is gone.Compress your knee. Put an elastic bandage, straps, or sleeves on your knee to control swelling.Raise your knee on a pillow when you’re sitting or lying down.

Wear a knee brace to stabilize the knee and protect it from further injury.

Take anti-inflammatory painkillers. Non steroidal anti-inflammatory drugs (NSAIDs) like aspirin, ibuprofen, or naproxyn will help with pain and swelling. Follow the directions exactly. Talk with your doctor or pharmacist if you have any questions or feel that you still need them after 7 to 10 days.

Practice stretching and strengthening exercises if your doctor recommends them. Never stretch so much that it hurts. Ask your doctor to recommend a physical therapist for guidance.