title: Correlation between center-edge angle and acetabulum-head index in developmental dysplasia of the hip with avascular necrosis of the femoral head.
abstract: 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.
authors.affiliation: Department of Orthopedic Surgery, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
authors.forename: Mayuki
authors.initials: M
authors.lastname: Taketa
authors.forename: Toshio
authors.initials: T
authors.lastname: Fujii
authors.forename: Hideaki
authors.initials: H
authors.lastname: Kubota
authors.forename: Yasuharu
authors.initials: Y
authors.lastname: Nakashima
authors.forename: Yasuo
authors.initials: Y
authors.lastname: Noguchi
authors.forename: Yukihide
authors.initials: Y
authors.lastname: Iwamoto
mesh_terms: D000077:Acetabulum / Q000000981:diagnostic imaging*; D000293:Adolescent; D000328:Adult; D002648:Child; D005270:Femur Head / Q000000981:diagnostic imaging; D005271:Femur Head Necrosis / Q000145:classification / Q000000981:diagnostic imaging*; D006618:Hip Dislocation, Congenital / Q000000981:diagnostic imaging*; D006801:Humans; D011859:Radiography; D012044:Regression Analysis