Bracht-Schweizer Katrin, Freslier Marie, Krapf Sebastian, Romkes Jacqueline
Laboratory for Movement Analysis, University of Basel, University Children's Hospital Basel (UKBB), Basel, Switzerland.
Laboratory for Movement Analysis, University of Basel, University Children's Hospital Basel (UKBB), Basel, Switzerland.
Gait Posture. 2017 Oct;58:13-18. doi: 10.1016/j.gaitpost.2017.07.031. Epub 2017 Jul 8.
In clinical gait analysis, it is challenging to acquire usable force plate data for a patient in a limited amount of time. The aim of this study was to compare three measurement protocols, to investigate if any one of them was more time-efficient than the others at collecting kinetic data. Three conditions were compared for 15 orthopaedic patients: 1) approaching the force plate with four steps, 2) approaching the force plate with six steps, and 3) approaching the force plate with four steps while stepping on a target one step before the first force plate. Then, the following characteristics were analysed: the rate of usable force plate steps, the spatio-temporal parameters, the full-body gait kinematics, and the lower body kinetics. For the condition with four steps and targeting, the rate of usable force plate steps was highest: 84% (6.8 usable trials out of 8.1 trials on average per patient). Left hip adduction and rotation, right shoulder flexion, and total left hip power were the gait parameters with statistically significant differences between the four and six step approach. Left cadence, right step time, left thorax lateroflexion, left shoulder abduction, total right knee power, hip rotation, thorax tilt, and head tilt on both sides were statistically different between the four step approach with targeting and without targeting. None of the differences in gait parameters (except for head tilt) were of clinical relevance. Therefore, approaching the force plate with four steps and stepping on a foot-sized target one step prior to stepping on the force plate increases the rate of usable kinetic data.
在临床步态分析中，要在有限时间内为患者获取可用的测力板数据具有挑战性。本研究的目的是比较三种测量方案，以调查其中是否有一种在收集动力学数据方面比其他方案更具时间效率。对15名骨科患者的三种情况进行了比较：1）分四步靠近测力板；2）分六步靠近测力板；3）分四步靠近测力板，同时在踏上第一个测力板前一步踏上一个目标物。然后，分析了以下特征：可用测力板步数的比率、时空参数、全身步态运动学和下半身动力学。对于四步且有目标物的情况，可用测力板步数的比率最高：84%（每位患者平均8.1次试验中有6.8次可用试验）。左髋内收和旋转、右肩前屈以及左髋总功率是四步和六步方法之间具有统计学显著差异的步态参数。有目标物的四步方法和无目标物的四步方法之间，左步频、右步时间、左胸廓侧屈、左肩外展、右膝总功率、髋旋转、胸廓倾斜和双侧头部倾斜在统计学上存在差异。步态参数的差异（除头部倾斜外）均无临床相关性。因此，分四步靠近测力板并在踏上测力板前一步踏上一个足部大小的目标物可提高可用动力学数据的比率。
