3D analysis of the alignment of the lower extremity in high tibial osteotomy

Hideo Kawakami; Nobuhiko Sugano; Takashi Nagaoka; Keisuke Hagio; Kazuo Yonenobu; Hideki Yoshikawa; Takahiro Ochi; Asaki Hattori; Naoki Suzuki

doi:10.1007/3-540-45787-9_33

3D analysis of the alignment of the lower extremity in high tibial osteotomy

Hideo Kawakami, Nobuhiko Sugano, Takashi Nagaoka, Keisuke Hagio, Kazuo Yonenobu, Hideki Yoshikawa, Takahiro Ochi, Asaki Hattori, Naoki Suzuki

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

6 Citations (Scopus)

Abstract

The alignment of the lower extremities after high tibial osteotomy (HTO) varies widely on the radiographs. It is difficult to assess the rotation change on the radiographs. We developed computer software to calculate the alignment of the lower extremities and to simulate HTO. The purpose of this study is to compare and evaluate the variance in the femoro-tibial angle (FTA) and hip-knee-ankle angle (HKA) in relation to rotational shift of the lower extremity on radiographs and to clarify how the rotational shift affects the FTA and HKA by using three-dimensional (3D) CT simulation software for HTO. The mean absolute rotation angle of the lower extremity position on radiographs was 7.8 degrees, ranging from an external rotation of 8 degrees to an internal rotation of 14 degrees. Within the same range of rotation, the mean change in the FTA was 3.7 degrees, the mean change in the HKA was 1.5 degrees.

Original language	English
Title of host publication	Medical Image Computing and Computer-Assisted Intervention - 5th International Conference, MICCAI 2002, Proceedings
Editors	Takeyoshi Dohi, Ron Kikinis
Publisher	Springer Verlag
Pages	261-267
Number of pages	7
ISBN (Print)	3540442251
DOIs	https://doi.org/10.1007/3-540-45787-9_33
Publication status	Published - 2002
Externally published	Yes
Event	5th International Conference on Medical Image Computing and Computer-Assisted Intervention, MICCAI 2002 - Tokyo, Japan Duration: 2002 Sep 25 → 2002 Sep 28

Publication series

Name	Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume	2489
ISSN (Print)	0302-9743
ISSN (Electronic)	1611-3349

Other

Other	5th International Conference on Medical Image Computing and Computer-Assisted Intervention, MICCAI 2002
Country/Territory	Japan
City	Tokyo
Period	02/9/25 → 02/9/28

ASJC Scopus subject areas

Theoretical Computer Science
Computer Science(all)

Access to Document

10.1007/3-540-45787-9_33

Cite this

Kawakami, H., Sugano, N., Nagaoka, T., Hagio, K., Yonenobu, K., Yoshikawa, H., Ochi, T., Hattori, A., & Suzuki, N. (2002). 3D analysis of the alignment of the lower extremity in high tibial osteotomy. In T. Dohi, & R. Kikinis (Eds.), Medical Image Computing and Computer-Assisted Intervention - 5th International Conference, MICCAI 2002, Proceedings (pp. 261-267). (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Vol. 2489). Springer Verlag. https://doi.org/10.1007/3-540-45787-9_33

3D analysis of the alignment of the lower extremity in high tibial osteotomy. / Kawakami, Hideo; Sugano, Nobuhiko; Nagaoka, Takashi et al.

Medical Image Computing and Computer-Assisted Intervention - 5th International Conference, MICCAI 2002, Proceedings. ed. / Takeyoshi Dohi; Ron Kikinis. Springer Verlag, 2002. p. 261-267 (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Vol. 2489).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Kawakami, H, Sugano, N, Nagaoka, T, Hagio, K, Yonenobu, K, Yoshikawa, H, Ochi, T, Hattori, A & Suzuki, N 2002, 3D analysis of the alignment of the lower extremity in high tibial osteotomy. in T Dohi & R Kikinis (eds), Medical Image Computing and Computer-Assisted Intervention - 5th International Conference, MICCAI 2002, Proceedings. Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), vol. 2489, Springer Verlag, pp. 261-267, 5th International Conference on Medical Image Computing and Computer-Assisted Intervention, MICCAI 2002, Tokyo, Japan, 02/9/25. https://doi.org/10.1007/3-540-45787-9_33

Kawakami H, Sugano N, Nagaoka T, Hagio K, Yonenobu K, Yoshikawa H et al. 3D analysis of the alignment of the lower extremity in high tibial osteotomy. In Dohi T, Kikinis R, editors, Medical Image Computing and Computer-Assisted Intervention - 5th International Conference, MICCAI 2002, Proceedings. Springer Verlag. 2002. p. 261-267. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)). doi: 10.1007/3-540-45787-9_33

Kawakami, Hideo ; Sugano, Nobuhiko ; Nagaoka, Takashi et al. / 3D analysis of the alignment of the lower extremity in high tibial osteotomy. Medical Image Computing and Computer-Assisted Intervention - 5th International Conference, MICCAI 2002, Proceedings. editor / Takeyoshi Dohi ; Ron Kikinis. Springer Verlag, 2002. pp. 261-267 (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)).

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AB - The alignment of the lower extremities after high tibial osteotomy (HTO) varies widely on the radiographs. It is difficult to assess the rotation change on the radiographs. We developed computer software to calculate the alignment of the lower extremities and to simulate HTO. The purpose of this study is to compare and evaluate the variance in the femoro-tibial angle (FTA) and hip-knee-ankle angle (HKA) in relation to rotational shift of the lower extremity on radiographs and to clarify how the rotational shift affects the FTA and HKA by using three-dimensional (3D) CT simulation software for HTO. The mean absolute rotation angle of the lower extremity position on radiographs was 7.8 degrees, ranging from an external rotation of 8 degrees to an internal rotation of 14 degrees. Within the same range of rotation, the mean change in the FTA was 3.7 degrees, the mean change in the HKA was 1.5 degrees.

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3D analysis of the alignment of the lower extremity in high tibial osteotomy

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