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This is an archived page which is no longer updated.
Please visit the main page to look for a current version |
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Developmental Dysplasia of the Hip
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DDH Xray
- Acetabular Roof Angle: Normal <30°.
- Hilgenreiner's line
- Normal femoral head located medial to Perkin's line and inferior to Hilgenreiner's line
- Perkin's Line
- Shenton's Line: Normal
- Shenton's Line: abnormal (broken)
- Abnormal femoral head located lateral to Perkin's line and superior to Hilgenreiner's line.
- Abnormal Acetabular Roof Angle: >30°.
- Xrays are better than ultrasound for patients > 6 months old.
Return to DDH.
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DDH Ultrasound
- Alpha (Graphe Angle): formed by lines drawn along the ilium and one drawn along the acetabulum. Normal >60°. <50°=DDH
- Ilium
- Acetabular labrum
- Gluteus musculature
- Capsule
- Humeral head
- Ultrasound indicated for patients < 6 months old.
Return to DDH.
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A/P pelvis of patient with DDH. |
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