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目的分析人体头颈部整体拉伸试验时颈椎软组织的拉伸伤。方法用Ｘ线机在试验的初始位置、拉伸力１０００Ｎ、力－位移曲线上看出有损伤迹象和有明显损伤迹象四个时刻拍摄Ｘ线片，然后在Ｘ线片上测量椎骨间的位移。结果第３拍摄时刻椎骨间的拉伸率均值为：Ｃ１－Ｃ２８３．８％、Ｃ２－Ｃ３７５．５％、Ｃ３－Ｃ４７３．２％、Ｃ４－Ｃ５６６．０％、Ｃ５－Ｃ６９０．９％。第４拍摄时刻椎骨间的拉伸率均值为：Ｃ２－Ｃ３７５．６％、Ｃ３－Ｃ４１０４．９％、Ｃ４－Ｃ５９２．２％、Ｃ５－Ｃ６１３３．６％。结论Ｘ线片能有效地追踪颈椎的软组织损伤。如果用高速Ｘ线摄影机和计算机图像分析系统，测量结果的精度会更高，判断也会更准确
Objective To analyze the tensile injury of cervical soft tissue during the whole head and neck tensile test. Methods X-ray machine in the initial position of the test, tensile force 1000N, force - displacement curve showed signs of injury and obvious signs of injury at four moments X-ray film, and then measured in the X-ray film between the displacement of the vertebra. Results The mean value of intervertebral stretch at the third shooting time was: C1-C283.8%, C2-C375.5%, C3-C473.2%, C4-C566.0%, C5-C690.9%. The mean value of intervertebral stretch at the fourth shooting time was C2-C375.6%, C3-C4104.9%, C4-C592.2%, and C5-C6133.6%. Conclusion X-ray can effectively track the soft tissue injury of the cervical spine. If using high-speed X-ray cameras and computer image analysis system, the measurement accuracy will be higher, the judge will be more accurate