单侧先天性髋关节脱位病人的动态足底压力测定初步分析

PRELIMINARY ANALYSIS ON DYNAMIC SOLE PRESSURE IN THE UNILATERAL CONGENITAL DISLOCATION OF THE HIP

为分析先天性髋关节脱位的动态足底压力分布，应用自行研制的足底压力分布视频图像测试系统，采用自身配对比较的方法，对7名单侧先天性髋脱位病人的双侧肢体进行步态周期中站立相的动态足底压力测定。结果表明：患肢在站立相时间、足底平均压力及压力时间积分等参数均与健肢有显著的差异（P＜0．05），这些差异与患肢髋脱位的病理生理有着密切的关系，是患肢因其髋关节脱位、肢体短缩、臀中肌功能不全对健肢的一种代偿形式，也是病理状念下，健患两侧肢体建立起来的一种平衡。通过足底压力的测试分析能加深了解先天性髋脱位的变化规律。比较术前、术后动态足底压力各个参数的变化，可作为从生物力学角度分析和评定手术效果的一项定量的参考指标。

For analysing the sole pressure distribution in the congenital dislocation of hip jont, we employedthe sole- pressure-distribution-video-image- system designed by the authors to messure thedynamic sole pressure in bilateral feet standing phase of a gait of the 7 patients with unilateralcongenital dislocation of the hip. By auto-pairing-control and statistical student's T testing, theresults showed: there are significant difference (p<0.05), in time, sole pressure, sole-pressure-timeintegrals in standing phase in diseased limb compared with the normal limb. The differences areclosely related to the pathophysiologic changes of the congenital dislocated hip joint. Due to theshortage of the limb and the dysfunction of the musculus gluteus medius caused by the dislocatedhip joint, the diseased limb compensate to and pathologically reach a new balanced state with thecontralateral normal one. By assessing the sole pressure, more knowledge of the congenitaldislocation of hip joint will be obtained to be a quantified index for assessing and evaluating theeffect of operation at the aspect of biomechanics.