Sagittal US of the left hip at day of life 1 (above) shows a very shallow left acetabulum with less than 50% coverage of the femoral head and an alpha ankle of less than 50 degrees. Sagittal US of the left hip at day of life 7 after being placed in a harness (middle) shows a less shallow left acetabulum with somewhat greater coverage of the femoral head and an alpha ankle of between 50-59 degrees. Sagittal US of the left hip at 5 months old after treatment with a harness (below) shows a normal left acetabulum with greater than 50% coverage of the femoral head and an alpha ankle of greater than 60 degrees.
The diagnosis was developmental dysplasia of the hip with the left hip progressing from initially being dysplastic at day of life 1 to then being immature on day of life 7 and finally becoming normal at 5 months.
Pediatric Imaging 