Permanent Dislocation of the Patella due to Distal Femoral Epiphyseolysis in Perinatal Period

We report a 3-year-old girl with permanent dislocation of the patella due to distal femoral epiphyseolysis in the perinatal period.This distal femoral epiphyseolysis may have occurred from a trial of external cephalic version.Radiogram showed genu valgum in the right knee when aged two months.Presently, the patient has a permanent lateral dislocation of the patella.The etiology of patellar dislocation is discussed.