Download PDFOpen PDF in browserEquivalence Evaluation of Point Registration and Intraoperative CT Registration While Using Navigation System4 pages•Published: July 12, 2018AbstractRegistration of the patient body and virtual 3D plan is an initial but very fundamental procedure for accurately using the navigation system. Currently, there are two commonly used registration methods, i.e., point registration and intraoperative CT registration, which are suitable for different kinds of operative scenarios. By now, there is no literature reporting about how to choose between these two registration methods during using the navigation systems. In this study, we respectively performed 12 simulated osteotomies based on the point registration method and intraoperative registration method during using the navigation system. Two statistical tests were done based on the surgical errors of osteotomy surgeries using these two registration methods. Specifically, T-test result (p<0.001) indicated the intraoperative CT registration performed better than point registration. Besides, equivalence test of the two registration methods (Rg=1.00 mm) suggested that the two registration methods perform equivalently while using the navigation system. Moreover, we have shared the surgeons some practical suggestions about how to choose between these two registration methods during using the navigation system.Keyphrases: Equivalence test, Intraoperative CT Registration, navigation system, Point Registration, Selection of the Registration Methods In: Wei Tian and Ferdinando Rodriguez Y Baena (editors). CAOS 2018. The 18th Annual Meeting of the International Society for Computer Assisted Orthopaedic Surgery, vol 2, pages 248--251
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