 Reconstruction of the MPFL (medial patellofemoral ligament) in patients with minor trochlear dysplasia is technically possible without interfering with distal growth plate of the femur, however, large studies are missing.Osseous articular correction before epiphyseal closure is contraindicated.In adult patients with recurrent LPD and without trochlear dysplasia or type A or C according to Dejour classification, MPFL reconstruction alone might be beneficial, in which unchanged osseous or dynamic instability will be compensated.