The impact of compressive force magnitude on the in vitro neutral zone range and passive stiffness during a flexion-extension range of motion test

被引：1
|
作者：
Noguchi, Mamiko [1 ]
Gooyers, Chad E. [1 ,2 ]
Holmes, Michael W. R. [3 ]
Callaghan, Jack P. [4 ]
机构：
[1] Univ Waterloo, Dept Kinesiol, Waterloo, ON N2L 6P2, Canada
[2] Giffin Koerth Forens Engn & Sci, Toronto, ON M5J IT1, Canada
[3] Univ Ontario, Fac Hlth Sci, Inst Technol, Oshawa, ON L1H 7K4, Canada
[4] Univ Waterloo, Fac Appl Hlth Sci, Dept Kinesiol, Waterloo, ON N2L 3G1, Canada
来源：
COGENT ENGINEERING | 2015年 / 2卷 / 01期
基金：
加拿大自然科学与工程研究理事会;
关键词：
neutral zone; passive stiffness; compression; flexion-extension range of motion test; in vitro;
D O I：
10.1080/23311916.2015.1014253
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The objective of this work was to examine the influence of compressive force magnitude on a functional spinal unit's (FSU) flexion-extension neutral zone measured during pure moment (PM) tests. Each porcine cervical FSU received four repeats of a PM test with 10, 300, 900 and 1,800 N of compressive force, in a randomized order. Increasing the magnitude of compression significantly decreased the neutral zone range (p < 0.001), while increasing passive stiffness (p < 0.001). The flexion limit at 10 N was significantly lower (p < 0.05) than the other loading conditions. Reporting the compressive force magnitude is important when posture is a standardized experimental factor considered in the design of in vitro spine biomechanics studies.
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页数：9
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