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Idiopathic protrusio acetabuli in juveniles
Rheumatology and Rehabilitation
|February 1, 1981
Summary
Idiopathic protrusio acetabuli (IPA) in children presents as hip pain, often asymmetrical. Early signs like contralateral hip pain predict bilateral disease, potentially requiring hip replacement.
Area of Science:
- Pediatric Rheumatology
- Orthopedic Surgery
- Medical Imaging
Background:
- Idiopathic protrusio acetabuli (IPA) is a rare hip condition.
- Undiagnosed hip pain in children can indicate underlying orthopedic issues.
Purpose of the Study:
- To describe the clinical and radiographic features of pediatric IPA.
- To identify early indicators of disease progression and bilaterality.
Main Methods:
- Retrospective case series of eight children (aged 9-15) diagnosed with IPA.
- Clinical assessment, radiographic evaluation, and family history collection.
- Histological examination of synovial tissue in two cases.
Main Results:
- Asymmetrical presentation was common.
- Six patients experienced rapid deterioration, with four requiring bilateral total hip replacement.
- Contralateral hip pain on flexion and adductor spasm were predictive of bilateral disease.
- Hypermobility was noted in six patients; familial IPA in three families.
Conclusions:
- IPA in children can lead to significant hip joint deterioration and require surgical intervention.
- Early identification of predictive signs is crucial for timely management.
- Genetic and systemic factors like hypermobility may play a role in IPA development.