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首页> 外文期刊>Gait & posture >A comparison of hip joint centre localisation techniques with 3-DUS for clinical gait analysis in children with cerebral palsy
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A comparison of hip joint centre localisation techniques with 3-DUS for clinical gait analysis in children with cerebral palsy

机译:3-DUS髋关节中心定位技术与脑瘫患儿临床步态分析的比较

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摘要

Functional calibration techniques have been proposed as an alternative to regression equations for estimating the position of the hip within the pelvic co-ordinate system for clinical gait analysis. So far validation of such techniques has focussed on healthy adults. This study evaluated a range of techniques based on regression equations or functional calibration procedures techniques in 46 children representative of those attending a major clinical gait analysis service against previously validated 3-D ultrasound techniques for determining the hip joint centre. Best agreement with ultrasound for the position of the hip within the pelvic coordinate system was found for the Harrington equations (mean 14. mm, sd 8. mm). Sphere fitting (mean. ≈. 22. mm, sd 11. mm) performed better than transformational techniques applied locally (mean. ≈. 33. mm, sd 12. mm) or globally (mean. =. 30. mm, sd 14. mm). The participants with cerebral palsy showed reduced range of movement compared with healthy adults. Differences between these results and studies modelling the effects of simulated noise on functional techniques can probably be attributed to differences between that noise and the soft tissue displacements that are actually occurring.
机译:已经提出功能校准技术作为回归方程的替代方案,以估计髋骨在骨盆坐标系中的位置,以进行临床步态分析。到目前为止,此类技术的验证都集中在健康成年人身上。这项研究评估了基于回归方程或功能校准程序技术的46种儿童的一系列技术,这些儿童代表参加主要临床步态分析服务的儿童,而不是先前经过验证的3D超声技术来确定髋关节中心。在Harrington方程中,髋关节在盆腔坐标系内的位置与超声检查最吻合(平均14.mm,sd 8.mm)。球面拟合(平均≈。22. mm,sd 11. mm)的效果要好于局部(平均≈。33. mm,sd 12. mm)或全局(平均=。30. mm,sd 14)的转换技术。毫米)。与健康成年人相比,脑瘫参与者的活动范围减少。这些结果与模拟模拟噪声对功能技术影响的研究之间的差异可能归因于该噪声与实际发生的软组织移位之间的差异。

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