Navigated femoral anteversion measurements: general precision and registration options

Archives of Orthopaedic and Trauma Surgery
M CitakMusa Citak

Abstract

Intraoperative reduction of femoral fractures can result in rotational malalignment. Navigation modules allow fluoroscopy-based femoral anteversion (AV) measurements; however, their clinical feasibility has not been fully evaluated. An important technical consideration when obtaining navigated femoral rotational alignment is the necessity for orthogonal navigated fluoroscopic images. The current investigators hypothesized that there would be a critical imaging angle between the fluoroscopic images which optimized the acquisition of accurate rotational measurements. Following initial testing in plastic femora, 14 intact human cadaveric femora were subjected to CT and navigated fluoroscopic assessment of AV. The navigated registration process included the following test series: Standard perpendicular AP and lateral imaging at a 90 degrees angle; planar rotation of the lateral fluoroscopy position perpendicular to the axis of femoral neck and angled to the AP position at 75 degrees, 60 degrees, and 50 degrees; inlet and outlet imaging of the axis of the femoral neck at angles of 10 degrees, 20 degrees, and 30 degrees. For all setups, the difference between the AV angle of the navigation system and the CT-measured angle was calcula...Continue Reading

References

Apr 1, 1986·RöFo : Fortschritte auf dem Gebiete der Röntgenstrahlen und der Nuklearmedizin·H H Jend
Oct 1, 1980·Clinical Orthopaedics and Related Research·F T Hoaglund, W D Low
Feb 1, 1995·The Journal of Trauma·P TornettaA Kantor
Sep 1, 1993·The Journal of Bone and Joint Surgery. British Volume·M BråtenI Rossvoll
Mar 10, 2001·Journal of Orthopaedic Trauma·W M RicciR Sanders
Jul 13, 2001·JAMA : the Journal of the American Medical Association·L SharmaD D Dunlop
Jun 9, 2004·Injury·Paul Alfred Grützner, Norbert Suhm
Aug 4, 2004·Journal of Orthopaedic Trauma·R L JaarsmaA van Kampen
Aug 13, 2005·Archives of Orthopaedic and Trauma Surgery·Stefan HankemeierChristian Krettek
Jul 29, 2006·Der Unfallchirurg·R E HilgertH-J Egbers
Nov 8, 2006·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Daniel KendoffTobias Hüfner
Jul 11, 2007·Clinical Orthopaedics and Related Research·Yoram A WeilAndrew D Pearle

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Citations

Nov 12, 2010·Archives of Orthopaedic and Trauma Surgery·Philipp BretinMusa Citak
May 23, 2013·Journal of Orthopaedic Trauma·Yoram A WeilMeir Liebergall
Mar 6, 2013·Clinical Orthopaedics and Related Research·Meghan C CrookshankEmil H Schemitsch
Apr 12, 2014·Computer Aided Surgery : Official Journal of the International Society for Computer Aided Surgery·Meghan C CrookshankCari M Whyne
Oct 20, 2012·The International Journal of Medical Robotics + Computer Assisted Surgery : MRCAS·Nael HawiEmmanouil Liodakis
Apr 3, 2012·Computer Methods in Biomechanics and Biomedical Engineering·Mariano E Casciaro, Damian Craiem

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