Patellofemoral joint is an integral part of the knee joint, which cannot be properly examined during clinical examination of the knee joint, but involves many clinically important problems. The patient should be examined during gait and in the standing, supine and prone body position. The joint facet, retinaculum, quadriceps, patellar tendon and joint alignment should be always evaluated. It should be kept in mind that patellofemoral joint disease may develop in the presence of genu varus and valgus, as well as recurvation and procurvation. The Q angle, dynamic patellar shifting, patellar crepitation, popping senseation, hypermobility and subluxation should be also evaluated and it should be considered that examination of knee joint involves a complete process.