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  • 1
    ISSN: 1435-2451
    Keywords: Dynamic hip screw ; Gamma nail ; Loading capacity ; DHS-Osteosynthese ; γ-Nagel-Osteo-synthese ; Stabilitätsprüfung
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung An 24 paarigen Leichenfemora wurden instabile pertrochantäre Frakturen (nach Jensen) imitiert. Rechtes und linkes Femur wurden jeweils abwechslend durch DHS-und γ-Nagel-Osteosynthese versorgt und einer Stabilitätsprüfung unterzogen. Zyklische Belastungen wurden jeweils um 500 N bis zur maximalen Belastbarkeit gesteigert. Zudem wurden die plastische Verformung gemessen und die Folgen der Belastungsversuche radiologische dokumentiert. Die mittlere plastische Verformung war bei den DHS- gegenüber den γ-Nagel-Osteo-synthesen erhöht, die maximale Belastbarketi war statistisch signifikant erniedrigt. Die Femurschaftfraktur fand sich als Folge der Belastungsprüfung bei der γ-Nagelung 5mal häufiger als bei der DHS-Osteosynthese.
    Notes: Abstract In 24 human cadaver femora standardized instable pertrochanteric osteotomies were created. The right and left femur of each pair were alternately selected for osteosyntheses with the gamma nail and the dynamic hip screw. Afterwards an examination of stability was performed. Cyclical loads were increased in 500 N increments to the maximum loading capacity, while the deformation rate was continuously measured. Radiographs, were taken to prove the results of loading. The mean deformation was much greater in the DHS group than for the gamma nail, the maximum load to failure was significantly lower. Femoral shaft fractures caused by the loading occured five times as often in the gamma nail osteosyntheses than in the DHS.
    Type of Medium: Electronic Resource
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