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The impingement-dislocation risk of total hip replacement: Effects of cup orientation and patient maneuvers

Ghaffari, M ; Sharif University of Technology | 2012

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  1. Type of Document: Article
  2. DOI: 10.1109/EMBC.2012.6347556
  3. Publisher: 2012
  4. Abstract:
  5. Hip dislocation is one of the most frequent complications after total hip arthroplasty. Impingement and dislocation might be caused due to misalignment of the acetabular cup during surgery, or performing dislocation-prone activities afterwards. A finite element model was developed to predict the impingement and dislocation behavior of the prosthetic joint, for different combinations of cup orientation and patient maneuver. Four dislocation-prone activities of daily life and 25 cup orientations were analyzed to determine how close they are to the impingement and subsequent dcislocation events. The angular margin results obtained indicated that the sit-to-stand and standing while bending at the waist are prone to dislocation, in particular when the cup anteversion angle is small
  6. Keywords:
  7. Acetabular cup ; Activities of Daily Life ; Anteversion angles ; Dislocation behaviors ; Finite element models ; Hip dislocation ; Sit-to-stand ; Total hip arthroplasty ; Total hip replacement (THR) ; Finite element method ; Hip prostheses ; Arthroplasty
  8. Source: Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS ; 2012 , Pages 6801-6804 ; 1557170X (ISSN) ; 9781424441198 (ISBN)
  9. URL: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6347556