Anatomical basis for the choice of the femoral implant in the total hip arthroplasty |
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Authors: | M H Fessy B Seutin J Bèjui |
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Institution: | (1) Laboratoire d’Anatomie Mèdico-Chirurgicale, Facultè Laînnec, rue Guillaume Paradin, F-69372 Lyon Cedex 08, France;(2) Service de Chirurgie Orthopèdique, Hùpital E. Herriot, place d’Arsonval, F-69437 Lyon Cedex 03, France |
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Abstract: | There is within the population a considerable variation in the endosteal canal anatomy of the proximal extremity of the femur. This anatomical variation might jeopardize the result of the total hip arthroplasty when the surgeon uses a cementless femoral shaft. Inded, if the secondary fixation of an implant stays under the dependency of many parameters, one has to obtain before anything else a very good primary stability, obtained by the morphological appropriateness of the bone-implant. The authors propose to define the cementless indications, as regards total hip arthroplasty, defining two radio-anatomical parameters: the Cortico-Medullary Index and the Femoral Flare Index. |
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Keywords: | Normal anatomy Radio-anatomy Thigh bone Total hip arthroplasty |
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