Abstract
As the increase of people′s participation in sports activities, the number of patients with patellar dislocation is continuously increasing and patellar dislocation most frequently presents in children and adolescence. Once patellar dislocation occurs, it will bring serious psychological and economic burden to the patients, and it may lead to osteoarthritis or chronic disability. Acute patellar dislocation after conservative treatment has a high recurrence rate. The major risk factors for the recurrence of dislocation include patellar dysplasia, patella alta, increased tibial tubercle-trochlear groove distance and patella tilt. The therapies of recurrent patellar dislocation include femoral troehleoplasty, tibial tubercle transfer, medical retinaculum placation, lateral retinaculum release and the medial patellofemoral ligament reconstruction, which is widly used in current clinical, etc. For patients with different lesions or pathological features of patellar dislocation, individualized treatment plans should be developed. Key words: Patellar dislocation; Knee joint; Surgical procedures, operative; MPFL
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