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Validation of the femoral anteversion measurement method used in imageless navigation

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Turley, Glen A., Ahmed, Shahbaz M. Y., Williams, M. A. (Mark A.) and Griffin, Damian R. (2012) Validation of the femoral anteversion measurement method used in imageless navigation. Computer Aided Surgery, Vol.17 (No.4). pp. 187-197. doi:10.3109/10929088.2012.690230 ISSN 1092-9088.

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Official URL: http://dx.doi.org/10.3109/10929088.2012.690230

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Abstract

Total hip arthroplasty restores lost mobility to patients suffering from osteoarthritis and acute trauma. In recent years, navigated surgery has been used to control prosthetic component placement. Furthermore, there has been increasing research on what constitutes correct placement. This has resulted in the definition of a safe-zone for acetabular cup orientation. However, there is less definition with regard to femoral anteversion and how it should be measured. This study assesses the validity of the femoral anteversion measurement method used in imageless navigation, with particular attention to how the neutral rotation of the femur is defined. CT and gait analysis methodologies are used to validate the reference which defines this neutral rotation, i.e., the ankle epicondyle piriformis (AEP) plane. The findings of this study indicate that the posterior condylar axis is a reliable reference for defining the neutral rotation of the femur. In imageless navigation, when these landmarks are not accessible, the AEP plane provides a useful surrogate to the condylar axis, providing a reliable baseline for femoral anteversion measurement.

Item Type: Journal Article
Subjects: R Medicine > RC Internal medicine
R Medicine > RD Surgery
T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School > Health Sciences
Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group)
Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School
Library of Congress Subject Headings (LCSH): Total hip replacement -- Methodology, Computer-assisted surgery
Journal or Publication Title: Computer Aided Surgery
Publisher: Informa Healthcare
ISSN: 1092-9088
Official Date: 8 June 2012
Dates:
DateEvent
8 June 2012Published
Volume: Vol.17
Number: No.4
Number of Pages: 11
Page Range: pp. 187-197
DOI: 10.3109/10929088.2012.690230
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access (Creative Commons)
Funder: Engineering and Physical Sciences Research Council (EPSRC), Nikon Metrology (Firm), University of Warwick, University of Birmingham

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