Related Experiment Videos
Acetabular development after closed reduction of congenital dislocation of the hip
K Noritake1, Y Yoshihashi, T Hattori
1Nagoya University School of Medicine, Japan.
Insights
Impaired acetabular development after age 11-12, possibly due to poor secondary ossification, contributes to acetabular dysplasia in treated congenital dislocation of the hip (CDH) patients. Continued follow-up until skeletal maturity is crucial.
Area of Science:
- Orthopedics
- Pediatric Radiology
- Developmental Biology
Background:
- Congenital dislocation of the hip (CDH) is a developmental abnormality requiring early intervention.
- Acetabular dysplasia, a common sequela of CDH, can lead to long-term joint problems.
- Understanding the factors contributing to acetabular dysplasia is essential for optimizing treatment outcomes.
Purpose of the Study:
- To identify the causes of acetabular dysplasia in children treated for CDH.
- To investigate the pattern of acetabular development in relation to treatment outcomes.
- To determine the significance of late-stage acetabular development.
Main Methods:
- Retrospective review of serial radiographs from 54 hips in 47 children treated for CDH.
- Inclusion criteria: closed reduction, follow-up to at least 14 years of age.
- Exclusion criteria: femoral head deformity, residual subluxation; comparison with unaffected control hips.
Main Results:
- Acetabular development significantly worsened after age 11-12 in Severin group III hips compared to Severin group I hips or unaffected controls.
- Impaired acetabular development during late adolescence was identified as a cause of acetabular dysplasia at skeletal maturity.
- Potential cause identified as impaired secondary ossification of the acetabular rim.
Conclusions:
- Acetabular dysplasia in treated CDH can result from impaired acetabular development post-puberty.
- Secondary ossification of the acetabular rim may play a critical role in late acetabular development.
- Long-term follow-up of CDH patients until full skeletal maturity is vital for monitoring and managing acetabular development.
Abstract:
We reviewed the serial radiographs of 54 hips in 47 children treated by closed reduction for congenital dislocation of the hip and followed to at least 14 years of age, to determine the causes of acetabular dysplasia. We excluded hips with femoral head deformity or residual subluxation and compared the results with those from a control series of unaffected hips of patients with unilateral CDH. Acetabular development after the age of 11 or 12 years was significantly worse in Severin group III than in Severin group I hips on the affected side or Severin group III in unaffected control hips. One of the causes of acetabular dysplasia at maturity was found to be impairment of acetabular development after 11 or 12 years of age. This may be attributable to impaired secondary ossification in the acetabular rim. Our findings emphasise the importance of continuing the follow-up of patients treated for congenital dislocation of the hip until full skeletal maturity.