Authors
Henrik Olivecrona, Lars Weidenhielm, Lotta Olivecrona, Mats Beckman, André Stark, Marilyn Noz, Gerald Maguire, Michael Zeleznik, Lars Svensson, Torbjörn Jonson
Publication date
2004/1/1
Journal
Acta Orthopaedica Scandinavica
Volume
75
Issue
3
Pages
252-260
Publisher
Taylor & Francis
Description
Background It is difficult to assess the orientation of the acetabular component on routine radiographs. We present a method for determining the spatial orientation of the acetabular component after total hip arthroplasty (THA) using computed tomography.Patients and methods Two CT-scans, 10 min apart, were obtained from each of 10 patients after THA. Using locally developed software, two independent examiners measured the orientation of the acetabular component in relation to the pelvis. The measurements were repeated after one week. To be independent of the patient position during scanning, the method involved two steps. Firstly, a 3D volumetric image of the pelvis was brought into a standard pelvic orientation, then the orientation of the acetabular component was measured. The orientation of the acetabular component was expressed as operative anteversion and inclination relative to an internal …
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H Olivecrona, L Weidenhielm, L Olivecrona… - Acta Orthopaedica Scandinavica, 2004