用便携式步态分析仪评估全髋关节置换术手术效果

目的 通过比较全髋关节置换（total hip arthroplasty, THA）病人手术前后的步态变化，评估THA手术和康复效果。方法 应用IDEEA便携式步态分析仪（MiniSun公司，美国）测试7例THA患者手术前以及手术后25周自然行走时的步态，获得单腿支撑（single leg support, SLS）和双腿支撑（double-leg support, DLS）时间、SLS/DLS、跨步长、落腿强度等步态参数，并采用SPSS 16.0和Excel 2010对数据进行统计学分析。 结果 THA患者术后健侧腿SLS比术前明显下降（P<0.05）；半数以上THA患者患侧腿SLS术后比术前降低，健侧腿DLS、SLS/DLS术后比术前明显下降，患侧腿术后落腿强度比术前增加。结论 健侧腿SLS可作为评估THA手术效果的一个敏感性指标。应用便携式步态分析系统定量反映受试者的步态，是一种无创、可方便用于临床评估手术效果的方法。
Objective To assess the surgical and rehabilitation effects of total hip arthroplasty (THA) through comparing changes of gait parameters in patients before and after THA.MethodsThe gaits of 7 THA patients during their natural walking before THA and in the 25th week after THA were tested by using a portable gait analyzer (IDEEA, MiniSun, USA). The gait parameters including single limb support (SLS) time, double-limb support (DLS) time, SLS/DLS, stride length, foot fall strength were collected for statistic analysis by SPSS 16.0 and Excel 2010. Results The SLS of the healthy leg after THA significantly decreased (P<0.05); for the majority of THA patients, the SLS of the diseased leg decreased, the DLS and SLS/DLS of the healthy leg also decreased obviously, while the foot fall strength of the diseased leg increased after THA. Conclusions The SLS of the healthy leg can be used as a sensitive parameter to evaluate the operation effect of THA. The portable gait analysis system can quantitatively reflect the subject’s gait, thus it is a non-invasive and convenient method of evaluating the operation effect in clinic.