by Amy Scholten, MPH
A knee sprain is the stretching or tearing of ligaments that support the knee. Ligaments are strong bands of tissue that connect bones to each other.
Knee sprains may be caused by:
Risk Factors TOP
These factors increase your chance of developing a knee sprain. Tell your doctor if you have any of these risk factors:
Your doctor will ask about your symptoms and how the injury occurred. The knee will be checked to see how stable the joint is and how severe the pain is. Tests may include:
Knee sprains are graded according to their severity. The more ligaments involved the more severe the injury.
To reduce your risk of spraining a knee:
American Academy of Orthopaedic Surgeons
American Orthopaedic Society for Sports Medicine
Canadian Orthopaedic Association
Canadian Orthopaedic Foundation
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Last reviewed September 2012 by Michael Woods, MD
Last Updated: 09/30/2012