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  • Title: Orientation of the acetabular component. A comparison of five navigation systems with conventional surgical technique.
    Author: Honl M, Schwieger K, Salineros M, Jacobs J, Morlock M, Wimmer M.
    Journal: J Bone Joint Surg Br; 2006 Oct; 88(10):1401-5. PubMed ID: 17012436.
    Abstract:
    We compared the orientation of the acetabular component obtained by a conventional manual technique with that using five different navigation systems. Three surgeons carried out five implantations of an acetabular component with each navigation system, as well as manually, using an anatomical model. The orientation of the acetabular component, including inclination and anteversion, and its position was determined using a co-ordinate measuring machine. The variation of the orientation of the acetabular component was higher in the conventional group compared with the navigated group. One experienced surgeon took significantly less time for the procedure. However, his placement of the component was no better than that of the less experienced surgeons. Significantly better inclination and anteversion (p < 0.001 for both) were obtained using navigation. These parameters were not significantly different between the surgeons when using the conventional technique (p = 0.966). The use of computer navigation helps a surgeon to orientate the acetabular component with less variation regarding inclination and anteversion.
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