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The acetabular notch in hip dysplasia
N M Portinaro1, S J Matthews, M K Benson
1Nuffield Department of Orthopaedic Surgery, Nuffield Orthopaedic Centre NHS Trust, Headington, Oxford, UK.
The Journal of Bone and Joint Surgery. British Volume
|March 1, 1994
Summary
A hip notch seen on infant radiographs may indicate persistent neonatal instability or femoral head displacement. This finding is often associated with a steeply inclined acetabular roof.
Area of Science:
- Pediatric Orthopedics
- Radiology
- Developmental Dysplasia of the Hip
Background:
- Radiographic assessment is crucial for diagnosing infant hip abnormalities.
- The superolateral margin of the infant hip can exhibit specific features on radiographs.
Purpose of the Study:
- To describe the significance of a specific radiographic finding in the infant hip.
- To correlate this finding with potential underlying hip instability or malformation.
Main Methods:
- Review of radiographs in infants during the first few months of life.
- Observation and documentation of a notch on the superolateral margin of the hip.
Main Results:
- A notch was identified on the superolateral margin of the infant hip in early life radiographs.
- This finding was associated with a steeply inclined acetabular roof.
Conclusions:
- The presence of a hip notch may serve as an indicator of persistent neonatal hip instability.
- It may also suggest potential displacement of the femoral head, warranting further investigation.