Acetabular angle – deficiency of the classical method of measuring

Acetabular angle (or index) plays important role in diagnostic of different conditions and diseases of the hip joint. Sometimes it plays critical role in diagnostic of developmental hip dysplasia, congenital hip dislocation etc. Sharp angle is another indicator of the acetabulum deformation.  In the classical variant of measurement lateral point of most lateral part of the acetabulum is used. But in case of acetabular deformation this classical method is not always accurate. This inaccuracy could be due upper middle part of acetabular cup deformation only. We agree with some authors that for determination of acetabular angle or sharp angle lateral point of subchondral (subcartilaginous) sclerosis of the acetabulum could be used.

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