The hips of a newborn are examined for developmental dysplasia. Which sign indicates an incomplete development of the acetabulum?
a. Negative Barlow test
b. Equal knee heights
c. Negative Ortolani sign
d. Thigh and gluteal creases are asymmetric
ANS: D
Asymmetric thigh and gluteal creases may indicate potential dislocation of the hip. If the hip is dislocated, the knee on the affected side will be lower. A positive Ortolani sign yields a clunking sensation and indicates a dislocated femoral head moving into the acetabulum. During a positive Barlow test, the examiner can feel the femoral head move out of the acetabulum.
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