A bending or twisting force on the knee can damage the collateral ligaments. Injuries to the collateral ligaments are common in running, jumping, and contact sports. People who are overweight or out of physical shape may have more knee injuries. Sometimes the cartilage, or lining of the bone, and the meniscus, or cushion in the knee, is damaged when the collateral ligaments are injured. A mild sprain gives mild pain.
Treatment is usually rest and support with an elastic bandage.
Ice and anti-inflammatory medication like aspirin or ibuprofen will help with swelling and pain. These medications should not be taken without approval from your healthcare provider if the person has an ulcer, kidney problems, an allergy to aspirin, or if on a blood-thinning medication. A severe sprain or tear of any ligament is a serious injury and may require special bracing or surgery. See your healthcare provider if you have knee pain that does not go away. It is important to see your doctor for all serious injuries.