Correlation between center-edge angle and acetabulum-head index in developmental dysplasia of the hip with avascular necrosis of the femoral head

In order to clarify the relationship between the center-edge angle and the acetabulum-head index, we reviewed 97 hips in 86 patients suffering from developmental dysplasia of the hip. We measured the center edge angle and the acetabulum-head index, and evaluated avascular necrosis of the femoral head according to Kalamchi classification. The center-edge angle correlated highly with the acetabulum-head index in non-avascular necrosis, and in Kalamchi groups I and II, but not in Kalamchi groups III and IV. Because of difficulties in measurement, it is possible that the center-edge angle does not precisely indicate acetabular coverage of developmental dysplasia of the hip with avascular necrosis.

[1]  Hui-Taek Kim,et al.  Diagnosing Childhood Acetabular Dysplasia Using the Lateral Margin of the Sourcil , 2000, Journal of pediatric orthopedics.

[2]  G. Hansson,et al.  Acetabulum‐Head Index Measured on Arthrograms in Children with Legg‐Calvé‐Perthes Disease , 2000, Journal of pediatric orthopedics. Part B.

[3]  B. Alman,et al.  A shortened course of parenteral antibiotic therapy in the management of acute septic arthritis of the hip. , 2000, Journal of pediatric orthopedics.

[4]  G. Hansson,et al.  Acetabulum-head index in children with normal hips: a radiographic study of 154 hips. , 1999, Journal of pediatric orthopedics. Part B.

[5]  S B Murphy,et al.  The prognosis in untreated dysplasia of the hip. A study of radiographic factors that predict the outcome. , 1995, The Journal of bone and joint surgery. American volume.

[6]  W. Cole,et al.  Reliability of radiological measurements in the assessment of the child's hip. , 1989, The Journal of bone and joint surgery. British volume.

[7]  Professor Dr. Dietrich Tönnis.  Congenital Dysplasia and Dislocation of the Hip in Children and Adults , 1987, Springer Berlin Heidelberg.

[8]  G. Macewen,et al.  Avascular necrosis following treatment of congenital dislocation of the hip. , 1980, The Journal of bone and joint surgery. American volume.

[9]  J. Reimers.  The stability of the hip in children. A radiological study of the results of muscle surgery in cerebral palsy. , 1980, Acta orthopaedica Scandinavica. Supplementum.

[10]  K Mose,et al.  Methods of measuring in Legg-Calvé-Perthes disease with special regard to the prognosis. , 1980, Clinical orthopaedics and related research.

[11]  S. Stulberg,et al.  Post-reduction avascular necrosis in congenital dislocation of the hip. , 1980, The Journal of bone and joint surgery. American volume.

[12]  C. H. Herndon,et al.  Legg-Perthes disease; a method for the measurement of the roentgenographic result. , 1950, The Journal of bone and joint surgery. American volume.

[13]  G. Wiberg,et al.  Studies on dysplastic acetabula and congenital subluxation of the hip joint : with special reference to the complication of osteoarthritis , 1939 .