Wang WT, Li YQ, Guo YM, et al. - In children with a fracture of the femoral neck, researchers clarified the factors that anticipate the development of avascular necrosis (AVN) of the femoral head. Two hundred thirty-nine children with a mean age of 10.0 years who had surgical treatment for a femoral neck fracture were retrospectively reviewed. Risk factors have been recorded, including age, sex, laterality, mechanism of injury, initial displacement, the type of fracture, the time to reduction, and the method and quality of reduction. Significant independent risk factors were age and initial displacement. AVN rates increase with age, particularly in patients 12 years of age or older, and with displacement severity. Anatomical reduction helps to lessen the rate of AVN in patients treated by closed reduction, while in those treated with open reduction, screw and plate fixation was preferable to fixation using cannulated screws or K-wires.