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Central X-ray beam correction of radiographic acetabular cup measurement after THA: an experimental study

Schwarz, T. ; Weber, M. ; Wörner, M. ; Renkawitz, T. ; Grifka, J. ; Craiovan, B.


Accurate assessment of cup orientation on postoperative radiographs is essential for evaluating outcome after THA. However, accuracy is impeded by the deviation of the central X-ray beam in relation to the cup and the impossibility of measuring retroversion on standard pelvic radiographs. In an experimental trial, we built an artificial cup holder enabling the setting of different angles of ...


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