Cogent Engineering | |
The impact of compressive force magnitude on the in vitro neutral zone range and passive stiffness during a flexion–extension range of motion test | |
Michael W.R. Holmes1  Mamiko Noguchi2  Chad E. Gooyers2  Jack P. Callaghan2  | |
[1] University of Ontario Institute of Technology;University of Waterloo; | |
关键词: neutral zone; passive stiffness; compression; flexion–extension range of motion test; in vitro; | |
DOI : 10.1080/23311916.2015.1014253 | |
来源: DOAJ |
【 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.
【 授权许可】
Unknown