Laboratoire de Biomécanique, Arts et Métiers ParisTech, CNRS UMR, France.
Spine (Phila Pa 1976). 2009 Dec 15;34(26):2900-6. doi: 10.1097/BRS.0b013e3181b4f667.
STUDY DESIGN.: A three-dimensional (3D) analysis of the cervical spine kinematics in vivo about a large asymptomatic database in order to evaluate the impact of age and gender on the neck's performances. OBJECTIVE.: To investigate the effect of age and gender on kinematical parameters of the cervical spine, specifically quantitative parameters concerning coupled movements and proprioception, using the infra-red POLARIS measurement system. SUMMARY OF BACKGROUND DATA.: Cervical spine kinematics has been investigated in vivo by numerous authors using various devices. However, few is known about the influence of gender and age on the 3D cervical biomechanics, specifically regarding coupled movements and proprioceptive abilities. METHODS.: A total of 140 asymptomatic volunteers (70 men and 70 women) aged 20 to 93 years old were enrolled. The noninvasive infrared system Polaris was used to quantify the 3D range of motion (ROM) of cervical spine and to evaluate proprioceptive abilities. For validating the protocol in terms of reproducibility, 12 volunteers were tested 3 times by 2 independent operators. RESULTS.: The standard error of measurement for the maximal ROM in the 3 space planes was 5%. Gender had no significant influence on the 3D cervical ROM, except for the "70-79 years old" group. Age had a significant influence on all main movements showing 0.55 degrees to 0.79 degrees magnitude decrease per decade. Age and gender had no significant influence on coupled movements. "Head-to-Target" proprioception was significantly affected by the age only in the horizontal plane. CONCLUSION.: A data base for cervical ROM, pattern of motion, and proprioceptive capability was established in population of 140 healthy subjects of various age and gender. Significant age-related decrease in ROM and proprioceptive abilities were observed in this study. Coupled movements did not vary with gender or age; however, their role in the cervical performance increased with age since main movements were limited.
对一个大型无症状数据库进行颈椎运动学的三维（3D）分析，以评估年龄和性别对颈部表现的影响。
使用红外 POLARIS 测量系统，研究年龄和性别对颈椎运动学参数的影响，特别是有关耦合运动和本体感觉的定量参数。
许多作者使用各种设备对颈椎运动学进行了体内研究。然而，对于 3D 颈椎生物力学的性别和年龄影响，特别是关于耦合运动和本体感觉能力，知之甚少。
共纳入 140 名无症状志愿者（70 名男性和 70 名女性），年龄 20 至 93 岁。使用非侵入性红外系统 Polaris 来量化颈椎的 3D 运动范围（ROM）并评估本体感觉能力。为了在可重复性方面验证方案，12 名志愿者由 2 名独立操作员进行了 3 次测试。
在 3 个空间平面上，最大 ROM 的测量标准误差为 5%。性别对 3D 颈椎 ROM 没有显著影响，只有“70-79 岁”组除外。年龄对所有主要运动都有显著影响，每十年减少 0.55 度至 0.79 度。年龄和性别对耦合运动没有显著影响。“头对目标”本体感觉仅在水平平面上受年龄影响。
在年龄和性别不同的 140 名健康受试者的人群中，建立了颈椎 ROM、运动模式和本体感觉能力的数据库。本研究观察到与年龄相关的 ROM 和本体感觉能力显著下降。耦合运动不受性别或年龄影响；然而，随着主要运动的限制，它们在颈椎性能中的作用随着年龄的增长而增加。
