Related Experiment Videos
Imaging strategies in the first 12 months after reduction of developmental dislocation of the hip
J MacDonald1, S Barrow, H M Carty
1Orthopaedic Department, Alder Hey Children's Hospital, Liverpool, England.
Insights
Computed tomography (CT) scans provide superior information for infants with developmental dislocation of the hip (DDH) treated with casting. This imaging technique aids in detecting subluxation not visible on plain radiographs, improving treatment accuracy.
Area of Science:
- Pediatric Orthopedics
- Radiology
- Medical Imaging
Background:
- Developmental dislocation of the hip (DDH) is a common pediatric condition requiring effective treatment.
- Plaster cast immobilization is a standard method for treating DDH.
- Accurate radiological assessment is crucial for monitoring treatment efficacy.
Purpose of the Study:
- To evaluate the utility of computed tomography (CT) scans in assessing the position of the hip after reduction and casting in infants with DDH.
- To compare the diagnostic value of CT scans versus plain radiographs in this patient population.
Main Methods:
- Retrospective review of 32 infants with DDH treated by reduction and plaster cast immobilization.
- Analysis of 50 CT scans from 22 patients, alongside review of radiological records.
- Comparison of findings from CT scans with earlier plain radiographs.
Main Results:
- Postreduction radiological studies, particularly CT scans, led to cast changes in 10 patients.
- Subluxation detected by CT scans was not evident on earlier plain radiographs in five patients.
- CT scans provided superior information compared to plain radiographs in infants.
Conclusions:
- CT scans offer superior diagnostic information for assessing hip position in infants with DDH undergoing cast treatment.
- While plain radiographs may suffice for older children or post-arthrography, CT is recommended for infants.
- CT scans have acceptable risks when used with appropriate radiation protection measures.
Abstract:
We have reviewed the records of 32 infants whose developmental dislocation of the hip (DDH) was treated by reduction and immobilization in a plaster cast. We examined 50 CT scans from 22 patients. The postreduction radiological studies led to a change of cast in 10 patients and, in five of them, the subluxation shown on CT scan was not seen in an earlier radiograph. Where reduction has been undertaken at the time of arthrography or in an older child, a plain radiograph may be adequate to confirm the position in the cast. In an infant, CT scans give superior information, have acceptable risks, and should be used in association with radiation protection measures.