Foot Orthoses in Patellofemoral Pain Syndrome: a Prospective Randomized Study of Morpho-specific Versus Placebo Orthoses

Inclusion Criteria: * Male or female aged 12-40 years * Patellofemoral pain syndrome * Patient affiliated to a social protection regime * Patient who signed an informed consent * For teenagers with no complete growth and muscular maturation, failure of appropriate rehabilitation during minimum 2 months * Patient informed of the results of the prior medical examination * Normality (no sign of osteoarthritis) of the knee radiographs * Ability to read and understand French Exclusion Criteria: * Knee osteoarthritis * Systemic disease * Inflammatory rheumatism disease * Unstable knee * Prior patellofemoral dislocation * Osteochondrosis * Referred pain from a hip or spine disease (particularly proximal femoral epiphysiolysis in the teenagers) * A history of patellar trauma * A history of knee surgery * Meniscus, ligament or osteochondral pathology * Knee tendinitis or bursitis * Neurologic disease * Pregnancy * Antidepressant therapy or behavioral disorder * Patient unable to comply the required maximum observance * Impossibility to give enlightened information to the patient * Patient under guardianship