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Ortolani's sign and test

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A sign of, and test for, congenital luxation of the hip in newborn: the presence of a palpable "clunk" owing to anterior replacement of the femoral head within the acetabulum. Ortolani first presented his observations to the Accademia delle Scienze di Ferrara (the Academy of Sciences in Ferrara) in 1936.


  • M. Ortolani:
    Un segno poco noto e sua importanza per la diagnosi precoce di prelussazione congenita dell'anca. La Pediatria, 1937, 2: 129.
  • M. Ortolani:
    La lussazione congenita dell'anca. Nuovi criteri diagnostici e profilattico-correttivi.
    Bologna, Capelli, 1948. 130 pages.
  • Thomas G. Barlow:
    Early diagnosis and treatment of congenital dislocation of the hip.
    The Journal of Bone and Joint Surgery, London, 1962, 44B: 292-301.

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