Traumatic patellar dislocations are considered to be a consequence of active lifestyle and defined as acute ligamentous knee injury. The management of a primary traumatic patellar dislocation has been controversial. The medial patellofemoral ligament (MPFL) has been recognized as the primary medial stabilizer of the patella. This thesis book investigates the incidence, risk factors initial management of primary traumatic patellar dislocation, the long-term results of MPFL reconstruction and the clinical significance of the MPFL injury in primary traumatic patellar dislocation. The results of...