Developmental dysplasia of the hip - dynamic instability

Case contributed by Henry Knipe
Diagnosis certain

Presentation

Unilateral left cerebral palsy. Shortened left leg.

Patient Data

Age: 4 years
Gender: Male

Left acetabular dysplasia with a dislocated left hip that is spontaneously relocated on frogleg view. Left femoral capital epiphysis is smaller than the right with additional left > right coxa valga. Right hemipelvis bones are larger, presumably secondary to weight-bearing.

Case Discussion

AP and frogleg projections were requested by the treating surgeon, and in this case, demonstrates spontaneous relocation of the hip joint.

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