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  • Biomechanical evaluation of hip joint after Salter innominate osteotomy : a long-term follow-up study
    Vengust, Rok, 1967- ...
    The biomechanical state of the hip after a Salter innominate was investigated by using the radiographic data of 38 operated and 21 contralateral nonoperatedhips from our archives. The centre-edge ... angle of Wiberg was determined from the radiographs taken shortly after the operation. From the radiographs of the latest follow-up (7-13 years after the operation), we also determined the peak value of contact hip joint stress normalized by the body weight, and the functional angle of the weight-bearing area. A mathematical model was used. We show that the geometrical parameters aside from the centre-edge angle may considerably influence the contact hip stress distribution. We also show that the functional angle of the weight-bearing area is a more relevant parameter than the normalized peak stress if the exactmagnification of the images is not known and if there is considerable variation of the image size within the sample. The development of the centre-edge angle of the operated hips and of the contralateral hips was also studied. We found that the centre-edge angle increases on average during the follow-up time in the operated hips as well as in the contralateral nonoperated hips, but the average increase is smaller in the former. It is shown that an unfavorable stress distribution is connected to the decrease of the centreedge angle over time. Finally, we founded a weak positive correlation between the centre-edge angle shortly after the operation and the functional angle of the weight-bearing area at the of the latest follow-up.
    Vir: Archives of orthopaedic and trauma surgery. - ISSN 0936-8051 (Vol. 121, 2001, str. 511-516)
    Vrsta gradiva - članek, sestavni del ; neleposlovje za odrasle
    Leto - 2001
    Jezik - angleški
    COBISS.SI-ID - 2456148

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