人体颈椎三维运动及刚度测试仪的研制和应用

目的研制ZMS-1型人体颈椎三维运动及刚度测试仪.方法根据脊柱3轴6自由度运动原理,制作活体颈椎三维运动和刚度测试装置.对20例学生志愿者进行活体颈椎生物力学测试,并对测试数据进行可重复性验证.结果测试仪由三维活动支架、扭矩传感器、应变记录仪、头部固定装置、躯干固定椅和基座组成.具备颈椎运动范围、颈椎刚度和颈部肌群肌力测试功能.相关性检验显示颈椎主动及被动运动范围、被动活动峰值扭矩、伸屈肌群最大等长收缩扭矩和载荷-位移曲线两次测试数据可重复性良好.结论测试仪为评价活体颈椎三维运动及刚度变化提供了有效手段.

The Development of the 3-D Motion and Stiffness of the Cervical Spine Measuring Equipment and Its Application

Objective To develop the ZMS-1 3-D motion and stiffness of the cervical spine measuring equipment. Methods A device that measures the three-dimensional motion and stiffness of the cervical spine in vivo was designed according to 3-dimensional 6-degree of freedom motion principle of spine. The biomechanics of cervical spine in vivo were investigated in 20 volunteer students. The reliability of measuring data were tested. Results The measuring equipment is consisted of three-dimensional movable frame, torque sensor, resistance straingauge,head- device, chair with vest and base. The functionality includes the measurement of the ROM of cervical spine, the stiffness of neck and the power of cervical muscle group. The correlation test on the two data sets of active and passive range of motion, peak torque of passive motion, peak torque of isometric contract of cervical extensors and flexors and load-displacement curve shows that the data has good reliability. Conclusion The equipment provide an effective means for evaluating the three-dimensional motion and stiffness of human neck in vivo.