Kim Hyun Kyung, Mirjalili Ali, Doyle Anthony, Fernandez Justin
Faculty of Medical and Health Sciences, University of Auckland , Auckland , New Zealand.
Radiology Department, Auckland District Health Board , Auckland , New Zealand.
Comput Methods Biomech Biomed Engin. 2019 Nov;22(14):1153-1161. doi: 10.1080/10255842.2019.1645133. Epub 2019 Jul 24.
A 3D anatomically-based finite-element foot model was adopted for predicting von Mises stresses within tibiotalar cartilage following 5 km barefoot running. To compare this predicted stress with T2 maps, magnetic resonance scans of the right ankle and plantar pressure were obtained from ten novices and ten marathon-experienced runners before and after running. Following running, tibiotalar cartilage stress was decreased in experienced runners. This corresponded with T2 values that did not change between pre- and post-running suggesting no increase in cartilage fluid levels. In contrast, novices maintained the same level of von Mises stress and this corresponded with a significant T2 increase in tibiotalar cartilage.
采用基于三维解剖结构的足部有限元模型来预测5公里赤脚跑步后距骨软骨内的冯·米塞斯应力。为了将预测应力与T2图谱进行比较，在跑步前后对10名新手和10名有马拉松经验的跑步者进行了右脚踝磁共振扫描和足底压力测量。跑步后，有经验的跑步者距骨软骨应力降低。这与跑步前后T2值不变相对应，表明软骨液水平没有增加。相比之下，新手的冯·米塞斯应力保持不变，这与距骨软骨T2值显著增加相对应。
