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首页> 外文期刊>Clinical biomechanics >Variations in the axis of motion during head repositioning - A comparison of subjects with whiplash-associated disorders or non-specific neck pain and healthy controls.
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Variations in the axis of motion during head repositioning - A comparison of subjects with whiplash-associated disorders or non-specific neck pain and healthy controls.

机译:头部重新定位过程中运动轴的变化-患有鞭打相关疾病或非特异性颈部疼痛的受试者与健康对照者的比较。

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BACKGROUND: The ability to reproduce head position can be affected in patients after a neck injury. The repositioning error is commonly used as a measure of proprioception, but variations in the movement might provide additional information. METHODS: The axis of motion and target performance were analyzed during a head repositioning task (flexion, extension and side rotations) for 24 control subjects, 22 subjects with whiplash-associated disorders and 21 with non-specific neck pain. Questionnaires regarding pain intensity and fear avoidance were collected. Head position and axis of motion parameters were calculated using a helical axis model with a moving window of 4 degrees . FINDINGS: During flexion the whiplash group had a larger constant repositioning error than the control group (-1.8(2.9) degrees vs. 0.1(2.4) degrees , P=0.04). The axis was more inferior in both neck pain groups (12.0(1.6)cm vs. 14.5(2.0)cm, P<0.05) indicating movement at a lower level in the spine. Including pain intensity from shoulder and neck region as covariates showed an effect on the axis position (P=0.03 and 0.04). During axial rotation to the left there was more variation in axis direction for neckpain groups as compared with controls (4.0(1.7) degrees and 3.7(2.4) degrees vs. 2.3(1.9) degrees , P=0.01 and 0.05). No significant difference in fear avoidance was found between the two neck pain groups. INTERPRETATION: Measuring variation in the axis of motion together with target performance gives objective measures on proprioceptive ability that are difficult to quantify by visual inspection. Repositioning errors were in general small, suggesting it is not sufficient as a single measurement variable in a clinical situation, but should be measured in combination with other tests, such as range of motion.
机译:背景:颈部受伤后患者的头部位置重现能力会受到影响。重新定位误差通常用作本体感觉的量度,但是运动的变化可能会提供其他信息。方法:分析了头部重定位任务(屈曲,伸展和侧旋)中的运动轴和目标性能,研究对象为24名对照受试者,22名与鞭打相关疾病的受试者和21名非特异性颈部疼痛的受试者。收集有关疼痛强度和避免恐惧的问卷。头部位置和运动轴参数使用螺旋轴模型(移动窗口为4度)计算。结果:在屈曲期间,鞭打组的恒定重定位误差比对照组大(-1.8(2.9)度对0.1(2.4)度,P = 0.04)。在两个颈部疼痛组中,轴均较差(12.0(1.6)cm对14.5(2.0)cm,P <0.05),表明脊柱运动水平较低。包括来自肩膀和颈部区域的疼痛强度作为协变量,显示了对轴位置的影响(P = 0.03和0.04)。在向左轴向旋转期间,与对照组相比,颈痛组的轴向变化更大(4.0(1.7)度和3.7(2.4)度与2.3(1.9)度,P = 0.01和0.05)。在两个颈部疼痛组之间,在避免恐惧方面没有显着差异。解释:测量运动轴的变化以及目标性能可提供客观的本体感受能力测量值,这些测量值很难通过视觉检查量化。重新定位误差通常很小,这表明在临床情况下,重新定位误差不足以作为单个测量变量,但是应结合其他测试(例如运动范围)一起进行测量。

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