Prospective Evaluation of Newborn Soft-Tissue Hip "Clicks" with Ultrasound.
Bond, Charles D. M.D.; Hennrikus, William L. M.D.; DellaMaggiore, Eugene D. M.D.
Journal of Pediatric Orthopaedics.
17(2):199-201, March/April 1997.
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 [alpha] angle of 63[degrees] in uninvolved hips and 62[degrees] 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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