Tibial torsion analysis in computed tomography: development and validation of a real 3D measurement technique

Abstract Purpose Pathological tibial torsion is known to negatively influence the functionality of the lower extremity, and therefore, its assessment might play an important role. While 3D imaging is used for many examinations of the musculoskeletal system, for the determination of tibial torsion no...

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Main Authors: Armando Hoch, Tabitha Roth, Magda Marcon, Philipp Fürnstahl, Sandro F. Fucentese, Reto Sutter
Format: Article
Language:English
Published: SpringerOpen 2021-02-01
Series:Insights into Imaging
Subjects:
Online Access:https://doi.org/10.1186/s13244-020-00960-w
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author Armando Hoch
Tabitha Roth
Magda Marcon
Philipp Fürnstahl
Sandro F. Fucentese
Reto Sutter
author_facet Armando Hoch
Tabitha Roth
Magda Marcon
Philipp Fürnstahl
Sandro F. Fucentese
Reto Sutter
author_sort Armando Hoch
collection DOAJ
description Abstract Purpose Pathological tibial torsion is known to negatively influence the functionality of the lower extremity, and therefore, its assessment might play an important role. While 3D imaging is used for many examinations of the musculoskeletal system, for the determination of tibial torsion no 3D measurement technique has been available so far. We developed a 3D measurement method and assess its interobserver reliability as well as its correlation with standard 2D measurement methods. Methods CT scans of 82 tibiae in 79 patients with a mean age of 41 years were included. A novel 3D measurement technique was developed and applied. Measurements were compared with two frequently used 2D measurement methods. ICC (intraclass correlation coefficient) for the new technique was determined and compared to the 2D measurement method. Furthermore, differences between left and right legs as well as between males and females were assessed. Results The ICC for the 2D methods was 0.917 and 0.938, respectively. For the 3D measurements, ICCs were calculated to be 0.954 and 0.950. Agreement between 2 and 3D methods was moderate to good with ICCs between 0.715 and 0.795. Torsion values for left and right legs did not differ significantly in 2D and in 3D (26.2 vs 28.5° and 27.2 vs. 25.9°). The same is true for the differences between male and female in 2D and 3D (26.2 vs. 29.6° and 25.0 vs. 31.2°). Conclusion The newly developed 3D measurement technique shows a high intraclass agreement and offers an applicable opportunity to assess the tibial torsion three-dimensionally.
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spelling doaj.art-77702a36e3e9421ab5fc8f0f7fd6d4422022-12-21T17:13:29ZengSpringerOpenInsights into Imaging1869-41012021-02-011211710.1186/s13244-020-00960-wTibial torsion analysis in computed tomography: development and validation of a real 3D measurement techniqueArmando Hoch0Tabitha Roth1Magda Marcon2Philipp Fürnstahl3Sandro F. Fucentese4Reto Sutter5Department of Orthopaedics, Balgrist University Hospital, University of ZurichResearch in Orthopaedic Computer Science, Balgrist University Hospital, University of ZurichBalgrist University Hospital, University of ZurichResearch in Orthopaedic Computer Science, Balgrist University Hospital, University of ZurichDepartment of Orthopaedics, Balgrist University Hospital, University of ZurichBalgrist University Hospital, University of ZurichAbstract Purpose Pathological tibial torsion is known to negatively influence the functionality of the lower extremity, and therefore, its assessment might play an important role. While 3D imaging is used for many examinations of the musculoskeletal system, for the determination of tibial torsion no 3D measurement technique has been available so far. We developed a 3D measurement method and assess its interobserver reliability as well as its correlation with standard 2D measurement methods. Methods CT scans of 82 tibiae in 79 patients with a mean age of 41 years were included. A novel 3D measurement technique was developed and applied. Measurements were compared with two frequently used 2D measurement methods. ICC (intraclass correlation coefficient) for the new technique was determined and compared to the 2D measurement method. Furthermore, differences between left and right legs as well as between males and females were assessed. Results The ICC for the 2D methods was 0.917 and 0.938, respectively. For the 3D measurements, ICCs were calculated to be 0.954 and 0.950. Agreement between 2 and 3D methods was moderate to good with ICCs between 0.715 and 0.795. Torsion values for left and right legs did not differ significantly in 2D and in 3D (26.2 vs 28.5° and 27.2 vs. 25.9°). The same is true for the differences between male and female in 2D and 3D (26.2 vs. 29.6° and 25.0 vs. 31.2°). Conclusion The newly developed 3D measurement technique shows a high intraclass agreement and offers an applicable opportunity to assess the tibial torsion three-dimensionally.https://doi.org/10.1186/s13244-020-00960-wTibial torsion3D measurementLower-limb deformityComputed tomographyTorsional malalignment
spellingShingle Armando Hoch
Tabitha Roth
Magda Marcon
Philipp Fürnstahl
Sandro F. Fucentese
Reto Sutter
Tibial torsion analysis in computed tomography: development and validation of a real 3D measurement technique
Insights into Imaging
Tibial torsion
3D measurement
Lower-limb deformity
Computed tomography
Torsional malalignment
title Tibial torsion analysis in computed tomography: development and validation of a real 3D measurement technique
title_full Tibial torsion analysis in computed tomography: development and validation of a real 3D measurement technique
title_fullStr Tibial torsion analysis in computed tomography: development and validation of a real 3D measurement technique
title_full_unstemmed Tibial torsion analysis in computed tomography: development and validation of a real 3D measurement technique
title_short Tibial torsion analysis in computed tomography: development and validation of a real 3D measurement technique
title_sort tibial torsion analysis in computed tomography development and validation of a real 3d measurement technique
topic Tibial torsion
3D measurement
Lower-limb deformity
Computed tomography
Torsional malalignment
url https://doi.org/10.1186/s13244-020-00960-w
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AT philippfurnstahl tibialtorsionanalysisincomputedtomographydevelopmentandvalidationofareal3dmeasurementtechnique
AT sandroffucentese tibialtorsionanalysisincomputedtomographydevelopmentandvalidationofareal3dmeasurementtechnique
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