Background

Ground reaction forces are biomechanical data, providing information to investigate pathological gait. The vertical component of ground reaction force introduces the upward thrust force within gait progression. Although alterations in the vertical component in patients with spinal disorders were addressed in the literature, still the corresponding effect on spinal disorders is a major issue to scrutiny. In this study, the effects of two different anatomical spinal disorders on the vertical component pattern were investigated.

Methods

Two groups of patients with lumbar spine stenosis and lumbar intervertebral disc degeneration with lesions at L4-L5 and/or L5-S1 levels, were recruited. The vertical component of ground reaction force and spatio-temporal parameters were obtained and analyzed using one-way analysis of variance.

Findings

The results indicated that all spatio-temporal parameters differed significantly (P < 0.05) except step lengths and stride times (P > 0.05). In a similar test, the Fz2 in patients with lumbar stenosis was higher than that of those with disc degeneration (P < 0.05). Besides, the vertical ground reaction force pattern showed lower slopes in stenosis patients.

Interpretation

This study showed that the vertical component of ground reaction force alterations and spatio-temporal parameters could be employed as indicators for certain spinal lesions. The results of this study could implement as an adjunct diagnostic method to help clinicians to differentiate between stenosis and disc degeneration patients and plan for their rehabilitation purposes.

中文翻译：

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腰椎疾病对步态垂直地面反作用力和时空参数的影响

背景

地面反作用力是生物力学数据，为研究病理步态提供信息。地面反作用力的垂直分量在步态进展中引入了向上的推力。尽管文献中提到了脊柱疾病患者垂直分量的改变，但对脊柱疾病的相应影响仍然是一个需要仔细研究的主要问题。在这项研究中，研究了两种不同解剖脊柱疾病对垂直分量模式的影响。

方法

招募了两组腰椎管狭窄症和腰椎间盘退变患者，病变位于 L4-L5 和/或 L5-S1 水平。采用单因素方差分析得到地表反作用力的垂直分量和时空参数并进行分析。

发现

 结果表明，除步长和步幅（P > 0.05）外，所有时空参数均存在显着差异（P < 0.05  ）。在类似试验中，腰椎管狭窄症患者的 Fz2 高于椎间盘退变患者（P  < 0.05）。此外，垂直地面反作用力模式在狭窄患者中显示出较低的斜率。

解释

该研究表明，地面反作用力变化的垂直分量和时空参数可以用作某些脊柱病变的指标。这项研究的结果可以作为一种辅助诊断方法实施，以帮助临床医生区分狭窄和椎间盘退变患者，并为他们的康复目的制定计划。