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What causes it? Jumper’s knee is an overuse injury that results from repetitive overloading of the extensor mechanism of the knee. Micro tears to the patellar tendon often exceed the body’s ability to heal the area unless the aggravating activity is stopped for a period of time. Jumper’s knee occurs in many types of athletes but is most common in those participating in sports such as high jump, long jump, netball, basketball, volleyball, or football, all of which require explosive or jumping movements. Side note:…