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Comparative anatomy of the mouse and human ankle joint using Micro-CT: Utility of a mouse model to study human ankle sprains

1 Orthopedic Institute, Medical College, Soochow University, Suzhou, China
2 Department of Orthopedics, The First Affiliated Hospital of Soochow University, Suzhou, China

Special Issues: Advanced Computer Methods and Programs in Biomedicine

The use of mouse models as a tool to study ankle sprain requires a basic understanding of the similarities and differences between human and mouse ankle joint anatomy. However, few studies have been conducted that address the merits and drawbacks of these differences in the functioning of joints. Twenty hindfoot specimens were obtained from 10 male C57BL/6J mice and scanned using micro-CT. The foot and ankle skeletal structures were reconstructed in three dimensions. Morphological parameters were then measured using a plane projection method and normalized data were compared with those of human ankles. There was no significant difference in the malleolar width, maximal tibial thickness, tibial arc length, trochlea tali arc length or trochlea tali width of the mouse specimens compared with the human model. However, a groove was observed on the talar dome in the mouse specimens which was not observed in humans, the talar dome being more symmetric. The mouse ankle was to a large extent able to mimic the mechanism of a human ankle and so a mouse model could be appropriate for expanding our understanding of ankle biomechanics in general. However, the structural differences in the talar dome in the mouse and human should not be ignored. Although there are some differences in the mouse and human ankle that cannot be ignored, compared to other animals, the human ankle is more similar to that of the mouse.
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Keywords talocrural joint; musculoskeletal anatomy; talar dome; rodent; foot biomechanics

Citation: Chao Gao, Zhi Chen, Yu Cheng, Junkun Li, Xiaowei Huang, Liangyi Wei, FanHe, Zong-ping Luo, Hongtao Zhang, Jia Yu. Comparative anatomy of the mouse and human ankle joint using Micro-CT: Utility of a mouse model to study human ankle sprains. Mathematical Biosciences and Engineering, 2019, 16(4): 2959-2972. doi: 10.3934/mbe.2019146


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