Definition of hip displacement and dislocation by acetabular dysplasia in children with cerebral palsy

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In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy
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In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy

Published on: July 2, 2021

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Nai Kuang Wang1, Shih Hsien Shen2, Brian Po Jung Chen3

  • 1Department of Internal Medicine, Taichung Veterans General Hospital, Taichung.

Journal of Children'S Orthopaedics
|August 11, 2023
PubMed

Insights

Hip structural changes in children with cerebral palsy indicate hip disorders starting at 30% migration. A 80% migration percentage marks the turning point for hip dislocation, aiding in diagnosis.

Area of Science:

  • Orthopedics
  • Pediatric Medicine
  • Radiology

Background:

  • Hip disorders are common in children with cerebral palsy.
  • Acetabular structural changes are linked to hip dysfunction.

Purpose of the Study:

  • To redefine hip disorders in children with cerebral palsy.
  • To correlate acetabular structural characteristics with migration percentage.

Main Methods:

  • Retrospective analysis of 70 children with spastic cerebral palsy.
  • Measurement of acetabular index using 3D CT scans.
  • Correlation of acetabular index changes with migration percentage increments.

Main Results:

  • Acetabular index increases with migration percentage.
  • A migration percentage of 30% signifies the onset of hip disorder.
  • Posterolateral acetabular dysplasia observed with >50% migration.
  • Complete dislocation noted at 80%-100% migration.

Conclusions:

  • Acetabular structure reflects hip dysfunction in cerebral palsy.
  • Migration percentage of 30% indicates hip disorder onset.
  • Migration percentage of 80% signifies hip dislocation.
Abstract

Keywords:
Cerebral palsyacetabular dysplasiadislocationhip displacementmigration percentagethree-dimensional computerized tomography

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