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  • Digitale Medien  (2)
  • Atapuerca  (1)
  • Preoperative planning  (1)
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  • Digitale Medien  (2)
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  • 1
    Digitale Medien
    Digitale Medien
    A comparative study of the accuracy of Ranawat’s and Pierchon’s methods to determine the centre of rotation in bilateral coxopathy (2000)
    Springer
    Skeletal radiology 29 (2000), S. 652-655 
    Details
    ISSN: 1432-2161
    Schlagwort(e): Keywords Centre of hip rotation ; Bilateral hip disease ; Total hip prosthesis ; Preoperative planning
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract  Objective. The objective of the study was to compare two methods (Ranawat’s and Pierchon’s) used to determine the centre of rotation of the hip and establish which method calculates a position nearer to the real centre of rotation. Patients and design. We selected 24 patients with unilateral osteoarthritis of the hip. The centre of rotation of the healthy hip was determined in two consecutive radiographic studies by superimposing a template of circles and using two axes as the reference lines (X-axis=teardrop line; Y-axis=a line perpendicular to the X-axis, drawn from the intersection of the ilio-ischiatic line and the teardrop line). After ensuring the stability of these references, both methods were applied to the same radiograph to determine which one established a centre of rotation nearer to the anatomical centre identified by the template of circles. Results. When the values for the healthy hip are compared with those obtained using Ranawat’s method, highly significant differences are observed for both X (P〈0.0001) and Y (P〈0.0001). When the results for the healthy hip are compared with the values obtained using Pierchon’s method, neither the X (P=0.722 ) nor the Y values (P=0.112) show any significant differences. It would be advisable to use Pierchon’s method to determine the centre of rotation during the preoperative planning for a total hip arthroplasty when the anatomical alteration is bilateral.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s002560000279
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  • 2
    Digitale Medien
    Digitale Medien
    The Atapuerca human fossils (2000)
    Springer
    Human evolution 15 (2000), S. 75-82 
    Details
    ISSN: 1824-310X
    Schlagwort(e): Atapuerca ; Sima de los Huesos ; Homo heidelbergensis ; Gran Dolina ; Homo antecessor
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract After 20 years of research, the Atapuerca sites have provided a large amount of archaeological and palaeontological remains. Human fossils have been found in three sites: Gran Dolina, galería and Sima de los Huesos. The Early Pleistocene human fossils from Gran Dolina have been ascribed to a new species,Homo antecessor, that represent the last common ancestor of Neandertals and modern humans. The Sima de los Huesos fossils and all the European Middle Pleistocene human fossils are the ancestors exclusively of the Neandertals, which evolved in Europe in conditions of geographic and genetic isolation.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02436236
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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