[The role of MRI in dislocations of the patella and other knee pathologies].

In addition to ultrasound and conventional x-ray, magnetic resonance imaging (MRI) plays an important role in the visualization of lesions of the knee. It allows the orthopaedic surgeon to safely detect ruptures of the cruciate ligaments, the meniscus, osteochondral lesions and other ligamentary structures such as the collateral ligaments and the medial patellofemoral ligament (MPFL). In patellar dislocations, risk factors for recurrent dislocations can be determined and the therapy can be adjusted accordingly.This articles aims to give the reader a comprehensive overview on current concepts and techniques in the use of MRI for lesions of the knee. It focuses on patellar dislocations, where MRI plays a dominant role in supporting decision making for the best therapeutic strategy.