The effect of pelvic movement on the accuracy of hip centre location acquired using an imageless navigation system.

Lustig, Sebastien, Fleury, Cyrille, Servien, Elvire, Demey, Guillaume, Neyret, Philippe and Donell, ST (2011) The effect of pelvic movement on the accuracy of hip centre location acquired using an imageless navigation system. International Orthopaedics, 35 (11). pp. 1605-1610. ISSN 1432-5195

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Abstract

OBJECTIVE: The aim of this study was to assess the accuracy of an imageless navigation system in localising the hip centre and to evaluate the effect of pelvic movement on the accuracy of hip centre acquisition. MATERIAL AND METHODS: A phantom leg was constructed to simulate the hip joint and upper femur. A 3D measurement device was used to measure precisely the co-ordinates of hip centre. A limber link simulated hip motion as used when defining the hip centre during computer-assisted surgery. The data generated by the 3D measurement device and the image-free navigation system was compared with increasing amounts of simulated pelvic movement. RESULTS: For moderate pelvic movement (5 mm) the mean error of the hip centre ranged between 1.5 mm and 3.9 mm with a corresponding angular error of between 0.25° and 0.64°. In conditions of excessive pelvic movement (15 mm) the mean error was 11.7 mm corresponding to an angular error of 1.9°. CONCLUSION: This in vitro study showed accurate acquisition of the centre of hip with a surgical navigation system. These data suggest that during TKA using this computer assisted navigation system, the accuracy of insertion will not be significantly affected by moderate pelvic movement during data acquisition.

Item Type: Article
Faculty \ School: Faculty of Medicine and Health Sciences > Norwich Medical School
Depositing User: Rhiannon Harvey
Date Deposited: 19 Apr 2011 09:16
Last Modified: 21 Apr 2020 16:40
URI: https://ueaeprints.uea.ac.uk/id/eprint/29587
DOI: 10.1007/s00264-010-1194-2

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