Patellar tendinopathy, or jumper's knee, is classified as an overuse syndrome of the knee, resulting from repetitive overload of the knee extensor mechanism. This injury is most common among athletes who regularly perform explosive jumping movements that place significant stress on the quadriceps and patellar tendons, such as basketball and volleyball players. The injury typically begins with mild pain, which is often overlooked, leading the individual to continue their activities without adjusting to the new condition, potentially worsening the injury. Diagnosis is based on a detailed medical history and clinical examination. Imaging tests such as ultrasound and magnetic resonance imaging (MRI) can be useful when the information obtained from the medical history and clinical examination is ambiguous. The first choice in treating patellar tendinopathy is conservative treatment, while surgical treatment is considered in the final stage of the injury or when conservative methods have not been effective. In the rehabilitation of patellar tendinopathy, kinesitherapy is the most significant physiotherapeutic intervention, involving exercises aimed at strengthening and stretching the muscles around the knee joint. Ultrasound therapy and laser therapy have also proven to be effective choices in treating jumper's knee.