Congenital hip dysplasia is a
common orthopedic disorder in childhood. Untreated dysplastic hips may result
in decreased range of motion, leg length discrepancy or luxation and
dislocation of the hip and early osteoarthritis.
Screening of hip dysplasia
provided imaging by ultrasound. The Graf-classification is commonly used and
recognized. Severe
hip dysplasia is defined as alpha-angles below 43°. Reduction and fixation
of the hips in a Spica-cast is the treatment of choice in children with severe
hip dysplasia.Cross sectional imaging (Computed Tomography (CT) or Magnetic
Resonance Imaging (MRI)) is the preferred modality in children with dysplastic
hips, which were reduced in a closed method and stabilized by a Spica-cast.
The primary imaging aim is the
reliable and correct interpretation of the femoral head within the socket after
closed reduction. There are clear advantages of MR-imaging compared to
conventional radiographs, CT, and ultrasound. Radiation issues and depiction of
the non-ossified femoral epiphysis through a Spica-cast are the primary
advantages of MRI.
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