Patellar tendinopathy is one of the most frequent damages of the locomotor system in sports of a jumping and running nature in which the extent and frequency of training are high. There are a large number of risk factors for the occurrence of patellar tendinopathy, which are divided into extrinsic (external) and intrinsic (internal). However, its appearance is mostly influenced by the amount and length of training in relation to the type of sport we play. The most important factors in the treatment of athletes with patellar tendinopathy are teaching them how to modify loading according to symptoms and to assess and modify internal and external factors that may contribute to overloading. Depending on the degree of injury, different physical methods and kinesitherapy are applied. Stretching, strength and proprioception exercises are most often used in kinesitherapy. Special attention during kinesitherapy programs is focused on the eccentric phase of the squat. Concentric and plyometric exercises are initially avoided and later gradually incorporated to prepare the athlete to return to daily training activities. Rehabilitation can be carried out through three phases, where the first phase includes pain modulation and load management with a focus on isometric exercises and flexibility, the second phase includes strengthening exercises and load progression in which eccentric contractions are mostly used, and the third and last phase includes functional strengthening of muscle structures and return to sports.