Abstract
Avascular necrosis (AVN) of the femoral head is a rare but devastating complication following fractures of the proximal femur or hip dislocation. Traumatic AVN derives from the interruption of the blood flow to the femoral head, which is mainly supplied by the medial circumflex femoral artery (MCFA) in the adult hip [1, 2]. The incidence of AVN depends on the fracture pattern and the integrity of the deep branch of the MCFA. In addition to traumatic interruption of the femoral head blood supply, the MCFA can be injured iatrogenically. Symptoms and radiographic changes in hips with AVN of the femoral head usually occur late and often months after the trauma. There is no curative treatment and therefore prevention is most important. While total hip arthroplasty shows very good clinical results in elderly patients, it is not the treatment of choice in children and adolescents with AVN. For this age group, hip preserving alternatives include core decompression, femoral osteotomies, and various bone grafting techniques.
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Steppacher, S.D., Haefeli, P.C., Anwander, H., Siebenrock, K.A., Tannast, M. (2014). Traumatic Avascular Necrosis of the Femoral Head. In: Koo, KH., Mont, M., Jones, L. (eds) Osteonecrosis. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-35767-1_14
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