Stress on the posteromedial region of the proximal tibia increased over time after anterior cruciate ligament injury

Miura, Soya; Iwasaki, Koji; Kondo, Eiji; Endo, Kaori; Matsubara, Shinji; Matsuoka, Masatake; Onodera, Tomohiro; Iwasaki, Norimasa

Stress on the posteromedial region of the proximal tibia increased over time after anterior cruciate ligament injury

Miura, Soya; Iwasaki, Koji; Kondo, Eiji et al.

Knee surgery sports traumatology arthroscopy, 2022, 30(5), 1744-1751

Permalink : https://hdl.handle.net/2115/89277

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アクセス権	open access
URI	https://hdl.handle.net/2115/89277
タイトル	Stress on the posteromedial region of the proximal tibia increased over time after anterior cruciate ligament injury
著者	Miura, Soya ; Iwasaki, Koji ; Kondo, Eiji ; Endo, Kaori ; Matsubara, Shinji ; Matsuoka, Masatake ; Onodera, Tomohiro ; Iwasaki, Norimasa
著者名 Miura, Soya
e-Rad_Researcher 40771895 著者名 Iwasaki, Koji
著者名 Kondo, Eiji
著者名 Endo, Kaori
著者名 Matsubara, Shinji
著者名 Matsuoka, Masatake
著者名 Onodera, Tomohiro
e-Rad_Researcher 30322803 著者名 Iwasaki, Norimasa
言語	英語
キーワード	Anterior cruciate ligament
	Knee
	Osteoarthritis
	Stress distribution
	Computed tomography-osteoabsorptiometry
発行日	2022-05-01
出版者	Springer
収録物名	Knee surgery sports traumatology arthroscopy
巻(号)	30(5)
ページ	1744-1751
抄録	Purpose Anterior cruciate ligament (ACL) injury induces anterior and rotatory instability of the knee. However, the effect of this instability on the stress distribution in the knee joint in living participants is not clear. The aim of this study was to compare the distribution pattern of subchondral bone density across the proximal tibia in the knees with and without ACL injury, and to investigate the correlation between the distribution patterns of the subchondral bone density and the duration of ACL-deficiency. Methods Radiographic and computed tomography (CT) data pertaining to 20 patients with unilateral ACL injury without combined injury (ACL-deficient group) and 19 nontraumatic subjects (control group) were collected retrospectively. Subchondral bone density of the proximal tibia was assessed using CT-osteoabsorptiometry. Both the medial and lateral compartments of the proximal tibia were divided into three subregions of equal width in the sagittal direction. The percentage of high subchondral bone density areas (HDA%) in each subregion was quantitatively analyzed. Results HDA% of the posteromedial region was significantly higher in the ACL-deficient group (mean: 21.6%) than in the control group (14.7%) (p = 0.002). In contrast, HDA% of the anteromedial region was significantly lower in the ACL-deficient group (9.4%) than in the control group (15.3%) (p = 0.048). The logarithm of the time elapsed from ACL injury to CT examination showed a significant correlation with HDA% in the posteromedial region (p = 0.032). Conclusions Subchondral bone density in the posteromedial region significantly increased after ACL injury and correlated with the duration of ACL-deficiency in semi-log manner in meniscus intact knees. The increase in stress on the posteromedial region after ACL injury, which induces a change in the subchondral bone density, justifies early ACL reconstruction after ACL injury.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	This is a post-peer-review, pre-copyedit version of an article published in Knee Surgery, Sports Traumatology, Arthroscopy. The final authenticated version is available online at: http://dx.doi.org/org/10.1007/s00167-021-06731-4
PISSN	0942-2056
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1007/s00167-021-06731-4