4-month-old female:
Hip instability.

Developmental dysplasia of the hip

Bone misalignment

Lateral subluxation of the left proximal femur. The left femoral head ossification center is not yet visible, as compared to the right one.

Acetabular index

Abnormal left acetabulum: the actabular angle with the Helgenreiner line is increased to 37° as compared to 21° on the right side.

Perkin's line

The right ossification center is well positioned medially to Perkin's line and inferomedial to the Hilgenreiner and Perkin's line. It is not yet visible on the left side.

Shenton's line

Shenton's line is broken on the left side and normal on the right side.

Layout
Anteroposterior
  • Anteroposterior
  • Frog-leg
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Frog-leg
  • Anteroposterior
  • Frog-leg
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