A sprain is the stretch or partial tear of ligaments (which connect two bones). A knee sprain happens when a ligament is stretched or torn because the knee gets twisted, bent, or hit.
The knee joint is made up of bones, ligaments, and tendons (bands that attach muscle to bone). It can happen when a person falls or during sports, especially if someone takes on too much physical activity too quickly.
Most sprains will heal in 8 weeks with rest and an appropriate exercise program. A sprained knee can be uncomfortable but resting the knee and doing the recommended exercises can help someone slowly return to normal activities.
All A to Z dictionary entries are regularly reviewed by KidsHealth medical experts.
|American Academy of Pediatrics (AAP) The AAP is committed to the health and well-being of infants, adolescents, and young adults. The website offers news articles and tips on health for families.|
|American College of Sports Medicine This site has tips on staying safe while playing sports and exercising.|
|National Athletic Trainers' Association This site contains information on certified athletic trainers and tips on preventing and healing sports injuries.|
|American Academy of Family Physicians This site, operated by the American Academy of Family Physicians (AAFP), provides information on family physicians and health care, a directory of family physicians, and resources on health conditions.|
|American Sports Medicine Institute The mission of ASMI is to improve the understanding, prevention and treatment of sports-related injuries through research and education.|
|A to Z: Contusion (Bruise), Knee Learn more about contusions (bruises) of the knee.|
|Runner's Knee Runner's knee is the most common overuse injury among runners, but it can also happen to other athletes who do activities that require a lot of knee bending.|
|Jumper's Knee Jumper's knee is an inflammation or injury of the patellar tendon. Although it can seem minor, it's actually a serious condition that can get worse over time and ultimately require surgery if not treated.|
|Jumper's Knee (Patellar Tendonitis) Jumper's knee is an inflammation or injury of the patellar tendon. Although it can seem minor, it's actually a serious condition that can get worse over time and ultimately require surgery if not treated.|
|Medial Collateral Ligament (MCL) Injuries MCL injuries - which are common in active and athletic kids - happen when excessive pressure is put on the knee joint, resulting in a torn ligament.|
|Strains and Sprains Are a Pain What's a sprain? What's a strain? Find out in this article for kids.|
|Anterior Cruciate Ligament (ACL) Injuries ACL injuries - which are common in active and athletic kids - happen when excessive pressure is put on the knee joint, resulting in a torn ligament.|
|Anterior Cruciate Ligament (ACL) Injuries ACL injuries - which are common in active and athletic people - happen when excessive pressure is put on the knee joint, resulting in a torn ligament.|
|Knee Injuries Healthy knees are needed for many activities and sports and getting hurt can mean some time sitting on the sidelines.|
|Medial Collateral Ligament (MCL) Injuries MCL injuries - which are common in active and athletic teens - happen when excessive pressure is put on the knee joint, causing a torn ligament.|
|Sports and Exercise Safety Playing hard doesn't have to mean getting hurt. The best way to ensure a long and injury-free athletic career is to play it safe from the start. Find out how.|
|Strains and Sprains Sprains and strains are common injuries, especially for people who play hard or are into sports. Find out what they are and how to recuperate from one.|
|Meniscus Tears The key to healing meniscus tears is not to get back into play too quickly. Find out what meniscus tears are and how to treat them.|
|Preventing Children's Sports Injuries Participation in sports can teach kids sportsmanship and discipline. But sports also carry the potential for injury. Here's how to protect your kids.|
|Bones, Muscles, and Joints Without bones, muscles, and joints, we couldn't stand, walk, run, or even sit. The musculoskeletal system supports our bodies, protects our organs from injury, and enables movement.|
|Knee Injuries Knee injuries are common among young athletes. Learn about causes, treatments, and prevention.|
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