Prospective Evaluation of Newborn Soft-Tissue Hip “Clicks” with Ultrasound

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Summary:Fifty infants with soft-tissue hip “clicks” persisting after age 3 months were prospectively studied by using ultrasound. All children demonstrated a stable hip examination by Barlow and Ortolani maneuvers; however, a click was palpated with abduction and adduction of the hip. Static ultrasonography demonstrated an average α angle of 63° in uninvolved hips and 62° in the clicking hips. All hips had >50% femoral-head coverage by the acetabulum. Dynamic ultrasound examination was normal in all cases. The soft-tissue clicks were not related to instability in this series of 50 infants.

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