What Is Patella Tendonitis?

Patella tendonitis is an injury that affects the tendon connecting your kneecap (patella) to your shinbone. The patella tendon plays a pivotal role in the way you use your leg muscles. It helps your muscles extend your knee so that you can kick a ball, run uphill and jump up in the air.

Patella tendinitis is most common in athletes whose sports involve frequent jumping — such as basketball and volleyball. For this reason, patella tendinitis is commonly known as jumper’s knee. However, even people who don’t participate in jumping sports can experience patella tendinitis.

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