Medical & Biological Engineering & Computing ( IF 2.6 ) Pub Date : 2021-01-25 , DOI: 10.1007/s11517-021-02320-2 Baizhen Chen 1 , Chunlong Liu 1 , Ming Lin 1 , Weixin Deng 1 , Zhijie Zhang 2
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This study is aimed to use shear wave elastography (SWE) to study the relationship between shear modulus and different body postures of the thoracolumbar fascia (TLF) and acquire physiologically meaningful information from the stiffness-posture graph to better quantify passive flexion responses. Seven passive postures were defined to evaluate the shear modulus of right side TLF at the third and fourth lumbar vertebra levels (L3 and L4) in twenty healthy male subjects. The TLF stiffness was significantly different among different postures (p < 0.001), and the TLF stiffness at L3 was always less than that at L4 (p < 0.001). As the forward tilt increased from 0 to 60°, the TLF stiffness increased in sitting and standing postures by 54.01% and 192.84%. In the neutral postures, the TLF stiffness in standing and sitting postures was 66.98% and 165.48% higher than that in rest posture. The above results show that the elastic properties of TLF play an important role in maintaining body static posture and that the forward tilt and sitting postures are likely to induce low back pain (LBP). In conclusion, this study provides preliminary in vivo data for the relationship between body postures and TLF stiffness.
Graphical abstract
中文翻译：
身体姿势对胸腰筋膜剪切模量的影响：剪切波弹性成像研究
本研究旨在使用剪切波弹性成像 (SWE) 研究剪切模量与胸腰筋膜 (TLF) 不同身体姿势之间的关系，并从刚度-姿势图中获取生理上有意义的信息，以更好地量化被动屈曲反应。定义了七种被动姿势来评估 20 名健康男性受试者在第三和第四腰椎水平（L3 和 L4）右侧 TLF 的剪切模量。不同姿势的TLF刚度差异显着（p < 0.001），L3的TLF刚度始终小于L4（p < 0.001)。随着前倾从0°增加到60°，坐姿和站立姿势的TLF刚度分别增加了54.01%和192.84%。在中立姿势下，站立和坐姿的TLF刚度比休息姿势高66.98%和165.48%。上述结果表明，TLF 的弹性特性在维持身体静态姿势方面起着重要作用，前倾和坐姿很可能诱发腰痛 (LBP)。总之，这项研究为身体姿势和 TLF 刚度之间的关系提供了初步的体内数据。
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