BACKGROUND Trunk function and lower limb strength seem to be the primary predictors for functional independence in acute stroke patients. Gaining a better understanding of their relationship during walking aids in the identification of intrinsic trunk control deficits and underlying lower limb deficits resulting in compensatory trunk movements. METHODS Fifty-seven subjects with stroke and 57 age- and gender-matched subjects without disability were included. Participants underwent an instrumented gait analysis with a standard total body Plug-In-Gait model, a clinical examination of the lower limbs based on range of motion, strength, muscle tone and several clinical assessment scales such as the Trunk Impairment Scale, Tinetti test and Functional Ambulation Categories. Spatiotemporal parameters and joint angular time profiles were compared between healthy adults and stroke survivors with severe and mild to moderate lower limb impairments. Spm1d was used to compare the joint angular time profiles between groups. FINDINGS Truncal deviations are present during hemiplegic walking, sub-acute stroke survivors walked with increased thoracic tilt, a neutral frontal position of the pelvis during stance, a pelvic hike during swing, and a more rotated position without crossing of the midline. Patients with more severe lower limb impairments had more pronounced deficits in truncal motion. INTERPRETATION Setting accurate rehabilitation goals is of major importance during stroke, as well as understanding the underlying mechanisms and causes of the truncal impairments. Although more compensatory trunk deviations were seen in participants with severe lower limb impairments, they should not be considered as the sole contributor of trunk impairments during walking. Results of this study suggest that intrinsic trunk deficits during walking are also present after stroke.

中文翻译：

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亚急性中风后行走过程中的躯干生物力学及其与下肢损伤的关系。

背景技术躯干功能和下肢力量似乎是急性卒中患者功能独立性的主要预测指标。在助步器中更好地了解它们之间的关系，有助于识别内在的躯干控制缺陷和潜在的下肢缺陷，从而导致代偿性躯干运动。方法包括57名中风患者和57名年龄和性别相匹配的无残疾受试者。参与者使用标准的全身即插即用模型进行了仪器化步态分析，并根据运动范围，力量，肌肉张力和一些临床评估量表（例如躯干损伤量表，Tinetti测试和功能性移动类别。比较了健康成年人和患有重度，轻度至中度下肢损伤的中风幸存者的时空参数和关节角时间分布。Spm1d用于比较各组之间的关节角时间曲线。发现偏瘫行走过程中出现躯干偏离，亚急性中风幸存者行走时胸廓倾斜增加，站立期间骨盆的中立正面位置，挥杆过程中骨盆抬高，并且旋转位置更大而没有中线交叉。下肢功能障碍较严重的患者，其截短运动的缺陷更为明显。解释设定正确的康复目标对中风至关重要，同时也要了解截断损伤的潜在机制和原因。尽管在患有严重下肢功能障碍的参与者中观察到更多的躯干代偿性偏离，但不应将其视为步行过程中躯干功能障碍的唯一原因。这项研究的结果表明，中风后也存在步行过程中内在的躯干缺陷。