title: [Femoropatellar pathology: concept update].
abstract: By biomechanical method the extensor mechanism of the knee is analysed, and the causes of instability and hyperpressure in the patello-femoral syndrome are discussed. Concerning these two entities, the author presents: definition, diagnosis, classification, clinical aspects, differential diagnosis, and surgical and clinical treatment.
authors.affiliation: Departamento de Ortopedia e Traumatologia, Faculdade de Medicina, Universidade de São Paulo.
authors.forename: M M
authors.initials: MM
authors.lastname: Amatuzzi
authors.forename: J L
authors.initials: JL
authors.lastname: Gouvêia Sobrinho
mesh_terms: D000293:Adolescent; D000328:Adult; D001696:Biomechanical Phenomena; D005269:Femur / Q000502:physiology / Q000503:physiopathology; D006801:Humans; D007593:Joint Instability / Q000175:diagnosis / Q000503:physiopathology / Q000628:therapy; D007719:Knee Joint / Q000502:physiology / Q000503:physiopathology; D009068:Movement / Q000502:physiology; D010329:Patella / Q000502:physiology / Q000503:physiopathology
vernacular_title: Patologia fêmoro patelar: atualização de conceitos.