The problem of the jumper's knee is described in this paper, as well as the mechanism of formation, knee anatomy, physiotherapeutic and kinesitherapy procedures for treating the syndrome. Jumper's knee belongs to knee overstressing syndromes belonging to orthopedic diseases. Jumper's knee syndrome mostly affects professional athletes, but also recreational athletes. The syndrome is caused by constant mechanical stress of the extensive knee system and can occur due to training errors or when the training footwear is mischosen. It manifests itself with pathological changes in the course of m. quadriceps and the patellar relationship. Jumper's knee syndrome extends through four stages that manifest themselves with different symptoms. The first stage refers to post-training pain, while the fourth stage represents tendon rupture. Treatment can be conservative and operational. Rehabilitation usually lasts up to six months, but the aim is for the patient to return to sports activities as quickly as possible. This paper will also describe the preventive measures used in athletes to prevent the development of jumper's knee syndrome.