Your medial collateral ligament -- or MCL -- is located along the inside of your femur -- thigh bone. Your MCL runs down the side of your knee and connects to your tibia -- shin bone. Your MCL functions to prevent your knee from buckling under stress. A bruise to your MCL can occur as the result of a direct blow to the inside of your knee or as the result of an abnormal twisting or movement of your knee. This may also be referred to a contusion.
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- Moderately Easy
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Recall an instance of injury. If you bruised your MCL, you will likely be able to recall when your injury occurred. You may remember following, colliding with another athlete or a sudden, twisting of your knee joint.
Take note of the location of your pain. A bruised MCL will cause pain and tenderness along the inside of your knee.
Look for bruising and swelling. A contusion crushes your muscle fibres and connective tissues without causing damage to your skin. Your skin may turn a blue-ish, purple colour as the result of blood pooling underneath your skin. Swelling may also occur along the inside of your knee.
Visit with your doctor. MCL bruises are usually nothing serious. However, bruises may be an indicator of a more severe injury. Bone fractures, knee dislocations, sprains and ligament damage can also occur to your knee and MCL. If pain from your MCL bruise persists for more than a few days, visit your doctor for a diagnosis.
Tips and warnings
- MCL bruises can normally be treated at home. Treat using the RICE method. Rest your affected leg. Apply ice for 15 to 30 minutes at a time, three to four times per day. Apply a compression bandage to your knee to control swelling. Elevate your knee as much as possible for the first 48 hours following injury.
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