[Injury and reconstruction of medial patellofemoral ligament]

Medial patellofemoral ligament (MPFL) is the major static structure to restrain lateral patellar dislocation. There are always MPFL injuries in patellar dislocations. The medial ligamentous deficiency will lead to recurrent patellar dislocation or patellar instability. Surgeon used to suture all those structures in the medial knee compartment before MPFL is recognized. Reconstruction of MPFL becomes an important method to treat patellar dislocation since it is anatomically recognized. Many techniques have invented MPFL reconstruction. The goal of this article is to develop a current understanding of MPFL and its clinical significance, especially MPFL reconstruction. The anatomical double bundle reconstruction of MPFL by bone anchors is a safe, easy and effective way to treat patellar dislocations.