Anatomical study of type classification and surface area of attachment sites for tibialis anterior tendon

Author:

Hirai Tomoki1,Edama Mutsuaki1,Togashi Ryoya1,Osanami Haruki1,Saito Rina1,Kato Koyo1,Shagawa Mayuu1,Sekine Chie1,Yokota Hirotake1,Hirabayashi Ryo1,Ishigaki Tomonobu1,Akuzawa Hiroshi1,Yamada Yuki1,Toriumi Taku2,Kageyama Ikuo2

Affiliation:

1. Niigata University of Health and Welfare

2. Nippon Dental University

Abstract

Abstract Background: The purpose of this study was to clarify the attachment types of the tibialis anterior tendon (TAT) in Japanese fixed cadavers and to determine the attachment site area in three dimensions. Methods: We examined 100 feet from 50 Japanese cadavers. The TAT was classified according to differences in the number of fiber bundles as: Type I, with one fiber bundle; Type II, with two fiber bundles; and Type III, with three fiber bundles. The attachment site area of the TAT was measured using a three-dimensional scanner. Results: Cases were Type II in 95% and Type III in 5%, with no cases of Type I identified. In Type II, mean attachment site areas were 85.2 ± 18.2 mm2 for the medial cuneiform bone (MCB) and 72.4 ± 19.0 mm2 for the first metatarsal bone (1MB), showing a significantly larger area for MCB than for 1MB. Conclusions: These findings suggest the possibility of ethnic differences in TAT attachment types and suggest that TAT attachments in Japanese individuals are highly likely to be Type II, with rare cases of Type III. Accurate measurement of attachment site areas is possible with appropriate three-dimensional measurements.

Publisher

Research Square Platform LLC

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