• J R Coll Surg Edinb · Oct 1998

    The 'black hole' sign: a visual ultrasonographic sign of hip dislocation.

    • J G Warner and R W Paton.
    • Department of Orthopaedic Surgery, Blackburn Royal Infirmary, UK.
    • J R Coll Surg Edinb. 1998 Oct 1; 43 (5): 333-5.

    AbstractVisual analysis of dynamic ultrasonography was employed in the assessment of hip stability in the neonate/infant. The 'black hole' sign visually describes the clearly recognizable ultrasonographic image of hip dislocation/dislocatability. This sign adds objectivity to the technique of visual analysis and is to be recommended.

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