Long-term stress distribution patterns of the ankle joint in varus knee alignment assessed by computed tomography osteoabsorptiometry

Onodera, Tomohiro; Majima, Tokifumi; Iwasaki, Norimasa; Kamishima, Tamotsu; Kasahara, Yasuhiko; Minami, Akio

Long-term stress distribution patterns of the ankle joint in varus knee alignment assessed by computed tomography osteoabsorptiometry

Onodera, Tomohiro; Majima, Tokifumi; Iwasaki, Norimasa et al.

International Orthopaedics, 2012, 36(9), 1871-1876

Permalink : https://hdl.handle.net/2115/50157

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アクセス権	open access
URI	https://hdl.handle.net/2115/50157
タイトル	Long-term stress distribution patterns of the ankle joint in varus knee alignment assessed by computed tomography osteoabsorptiometry
著者	Onodera, Tomohiro ; Majima, Tokifumi ; Iwasaki, Norimasa ; Kamishima, Tamotsu ; Kasahara, Yasuhiko ; Minami, Akio
e-Rad_Researcher 70547174 著者名 Onodera, Tomohiro
e-Rad_Researcher 30241334 著者名 Majima, Tokifumi
e-Rad_Researcher 30322803 著者名 Iwasaki, Norimasa
e-Rad_Researcher 10399868 著者名 Kamishima, Tamotsu
著者名 Kasahara, Yasuhiko
e-Rad_Researcher 20133738 著者名 Minami, Akio
言語	英語
キーワード	Computed tomography
	CT osteoabsorptiometry
	total ankle arthroplasty
	varus knee
発行日	2012-09
出版者	Springer Berlin / Heidelberg
収録物名	International Orthopaedics
巻(号)	36(9)
ページ	1871-1876
抄録	Purpose: The stress distribution of an ankle under various physiological conditions is important for long-term survival of total ankle arthroplasty. The aim of this study was to measure subchondral bone density across the distal tibial joint surface in patients with malalignment/instability of the lower limb. Methods: We evaluated subchondral bone density across the distal tibial joint in patients with malalignment/instability of the knee. Subchondral bone density of the ankle was measured by computed tomography (CT) osteoabsorptiometry from ten ankles as control and from 27 ankles with varus deformity/instability of the knee. The quantitative analysis focused on the location of the high-density area at the articular surface, to determine the resultant long-term stress on the ankle joint. Results: The area of maximum density of subchondral bone was located in the medial part in all subjects. The pattern of maximum density in the anterolateral area showed stepwise increases with the development of varus deformity/instability of the knee. Conclusions: Our results should prove helpful for designing new prostheses and determining clinical indications for total ankle arthroplasty.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	The final publication is available at www.springerlink.com
PISSN	0341-2695
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1007/s00264-012-1607-5