PMC8253858_01
Supine pelvic radiograph shows bilateral DDH with the acetabular index measurement.
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Radiographs revealed bilateral DDH with acetabular dysplasia, which was graded using the Tonnis classification to be grade I and grade II, and acetabular indices measured 35  and 52  for the right and left hips, respectively (Fig. 1).
Postoperative pelvic radiograph with the acetabular index measurement.
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On the first visit at 6 weeks, spica was converted to a broomstick cast for another 6 weeks (Fig. 2).
Standing pelvic radiograph shows improvement in the femoral head coverage bilaterally with marked pelvic obliquity to the right hip.
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Radiographs showed that both hips were well located and covered, and apart from the pelvic tilt, it was a non-concerning study (Fig. 3).
Standing pelvic radiograph shows resolution of pelvic obliquity.
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The child gradually regained full active and passive ROM, and a recent radiograph revealed resolution of the pelvic obliquity and excellent femoral head coverage (Fig. 4).