Surface strain gauge method for noninvasive measurements of the cervical disc pressure

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Abstract

Existing cervical disc pressure measurement methods have limited accuracy. This paper presents a method to measure the pressure without damaging the disc via indirect measurements. The interior strain condition and the tiny motion of the cervical disc are measured by placing a strain gauge on the front surface of the disc. The mechanical property of the disc can then be used to calculate the disc pressure. The tests showed that the measurement error was less than 15% and the correlation coefficient with invasive direct measurements was 0.79. The precision and repeatability of the surface strain method are better than the traditional method. So, this provides a noninvasive way to measure the disc pressure.

Keywords disc pressure strain measurement method error analyses

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Issue Date: 15 May 2014

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	Qinghua XUE
	Fang YUAN
	Zhenhua LIAO
	Hongsheng GU
	Weiqiang LIU

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Qinghua XUE,Fang YUAN,Zhenhua LIAO, et al. Surface strain gauge method for noninvasive measurements of the cervical disc pressure[J]. Journal of Tsinghua University(Science and Technology), 2014, 54(5): 690-694.

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http://jst.tsinghuajournals.com/EN/ OR http://jst.tsinghuajournals.com/EN/Y2014/V54/I5/690

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