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If you're an athlete who does an activity with a lot of jumping involved, or if you have a child or teen who plays such a sport, you may one day find yourself with jumper's knee. In the medical world, it's known as patellar tendonitis or patellar tendinopathy.
Tendons are tissues in the body that connect muscle to bone. The patellar tendon is an area of tissue that links the kneecap to the shinbone. The patellar tendon helps you during activities like jumping, running and straightening your leg.
Jumper's knee is used to describe an overuse injury in the patellar tendon. Some sports that have a greater association with jumper's knee:
However, this type of injury can happen with other activities as well, such as walking for exercise after you've been sedentary for a long time or if you're training for a marathon, says Theresa Marko, a board-certified clinical specialist in orthopedic physical therapy and owner of Marko Physical Therapy in New York City.
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