Emed® ST2 系统的正常压力值和可重复性。

Normal pressure values and repeatability of the Emed® ST2 system.

机构信息

Institute of Motion Analysis and Research, Orthopaedic & Trauma Surgery, University of Dundee, TORT Centre, Ninewells Hospital & Medical School, Dundee, Scotland, UK.

出版信息

Gait Posture. 2010 Jul;32(3):391-4. doi: 10.1016/j.gaitpost.2010.06.023.

DOI:10.1016/j.gaitpost.2010.06.023

PMID:20663670

Abstract

OBJECTIVES

This study was designed to assess the repeatability of the Emed® ST2 system and identify the range of pressure values observed in the normal foot.

METHODS

Measurements were taken from twenty-three healthy subjects, 14 females and 9 males, on two occasions 7 days apart. Begin of contact (BC), end of contact (EC), contact time (CT), peak pressure (PP), instant of peak pressure (IPP), contact area (CA) and pressure-time integral (PTI) were recorded.

RESULTS

The coefficient of repeatability (CR) was less than 16.0% for all 63 parameters considered. In 87.3% of the parameters investigated (55 of 63) the CR (expressed as a percentage of the mean) was less than 10%. The highest areas of PP were found under the great toe and second metatarsal heads, with mean (S.D.) equal to 435 kPa (202) and 407 kPa (146), respectively, followed by the third metatarsal head 345 kPa (96) and the hindfoot 332 kPa (93). The CT (% ROP (range of pressure)) was in the range 74-85% under the metatarsal heads, and 71% under the great toe. CA was highest under the heel at 33.8 cm(2).

CONCLUSION

Emed® ST2 system was found to be repeatable. The presented range of parameters compared very well to the results presented in the literature for the Emed® ST4 system.

摘要

目的

本研究旨在评估 Emed® ST2 系统的可重复性，并确定正常足所观察到的压力值范围。

方法

对 23 名健康受试者（14 名女性和 9 名男性）进行了两次测量，两次测量间隔 7 天。记录起始接触（BC）、结束接触（EC）、接触时间（CT）、峰值压力（PP）、峰值压力时刻（IPP）、接触面积（CA）和压力时间积分（PTI）。

结果

所有 63 个参数的重复性系数（CR）均小于 16.0%。在研究的 87.3%的参数（55/63）中，CR（以平均值的百分比表示）小于 10%。最大的 PP 区域出现在大脚趾和第二跖骨头下，平均值（SD）分别为 435 kPa（202）和 407 kPa（146），其次是第三跖骨头 345 kPa（96）和后足 332 kPa（93）。CT（% ROP（压力范围））在跖骨头部的范围为 74-85%，大脚趾为 71%。CA 在脚跟处最高，为 33.8 cm(2)。