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The Bone & Joint Journal
Vol. 101-B, Issue 9 | Pages 1160 - 1167
1 Sep 2019
Risk factors for the development of avascular necrosis after femoral neck fractures in children
Wang WT Li YQ Guo YM Li M Mei HB Shao JF Xiong Z Li J Canavese F Chen SY
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Aims

The aim of this study was to clarify the factors that predict the development of avascular necrosis (AVN) of the femoral head in children with a fracture of the femoral neck.

Patients and Methods

We retrospectively reviewed 239 children with a mean age of 10.0 years (sd 3.9) who underwent surgical treatment for a femoral neck fracture. Risk factors were 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. AVN of the femoral head was assessed on radiographs. Logistic regression analysis was used to evaluate the independent risk factors for AVN. Chi-squared tests and Student’s t-tests were used for subgroup analyses to determine the risk factors for AVN.