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Related Experiment Videos

Acetabular notch

N M Portinaro1, D Murray, M K Benson

  • 1Nuffield Orthopaedic Centre NHS Trust, Oxford, U.K.

Journal of Pediatric Orthopedics. Part B
|January 1, 1997
PubMed
Summary
This summary is machine-generated.

A hip ultrasound notch in infants may indicate acetabular damage. This finding often persists on follow-up ultrasounds and radiographs, suggesting delayed lateral acetabular maturation.

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Area of Science:

  • Pediatric Orthopedics
  • Medical Imaging
  • Developmental Dysplasia of the Hip

Background:

  • Dysplastic and unstable hips in infants can present with a specific ultrasound finding.
  • This finding is an indentation or notch at the superolateral acetabulum.

Purpose of the Study:

  • To evaluate the persistence and significance of the acetabular notch identified via ultrasound in infants.
  • To correlate ultrasound findings with subsequent radiographic examinations.

Main Methods:

  • Review of ultrasound and radiographic examinations for 295 infants in a hip screening clinic.
  • Analysis of the presence and persistence of the acetabular notch over time.

Main Results:

  • A notch was observed in hips with suspected hip dysplasia or instability.

Related Experiment Videos

  • 97% of hips with an initial ultrasound notch showed persistence on a second ultrasound.
  • 79% of persistent notches were still apparent on radiographs at 3 months of age.

    • Conclusions:

    • Persistent acetabular notches are common in infants with hip abnormalities.
    • The persistent notch likely signifies damage to the lateral acetabular ring epiphysis.
    • This finding suggests delayed maturation of the lateral acetabulum in affected infants.