Mattacola Carl G, Dwyer Maureen K, Miller Amy K, Uhl Tim L, McCrory Jean L, Malone Terry R
Division of Athletic Training, College of Health Sciences, University of Kentucky, Lexington, KY 40536-0200, USA.
Arch Phys Med Rehabil. 2007 May;88(5):653-60. doi: 10.1016/j.apmr.2007.02.029.
To determine the effect of custom-fitted orthoses on postural sway over a 6-week acclimation period.
Repeated-measures analysis of variance on postural sway measures with factors being group (control, malaligned), time (initial, 2 wk, 4 wk, 6 wk postintervention), and condition (with orthoses, without orthoses). For single-limb stance, side (right, left) was analyzed to determine bilateral differences.
Biodynamics laboratory.
Twenty-one subjects, 11 asymptomatic with rearfoot malalignment and 10 asymptomatic with normal rearfoot alignment.
Orthoses were prescribed and worn for 6 weeks. Balance testing was performed on 4 different dates with each subject tested in both orthotic conditions. Postural control was measured with three 10-second eyes-closed trials for single-limb stance, one 20-second eyes-closed bilateral stance with the platform moving, and one 20-second eyes-open bilateral stance with the platform and surroundings moving.
Sway velocity (in deg/s) for single-limb stance and equilibrium score for bilateral stance.
Postural sway measures were significantly decreased during single-limb testing with orthoses versus without orthoses, regardless of group. The orthotic intervention significantly improved bilateral stance equilibrium score in the malaligned group at weeks 2, 4, and 6 when compared with measures at the initial week. Equilibrium score of the malaligned group with orthoses at initial week was significantly lower (worse) than the control group with orthoses at initial week; however, these results were not repeated during measurements taken at weeks 2, 4, or 6.
The application of orthoses decreased sway velocity for single-limb stance, improving postural stability regardless of group when visual feedback was removed. During bilateral stance, postural stability was initially worse for the malaligned group with and without orthoses when compared with the control group; however, improvements were seen by week 2 and continued throughout the remainder of testing. Clinically, the application of orthoses appears to improve postural control in people with rearfoot malalignment, particularly when vision is removed.
确定定制矫形器在6周适应期内对姿势摆动的影响。
对姿势摆动测量值进行重复测量方差分析，因素包括组（对照组、排列不齐组）、时间（干预后初始、2周、4周、6周）和条件（佩戴矫形器、不佩戴矫形器）。对于单腿站立，分析侧别（右、左）以确定双侧差异。
生物力学实验室。
21名受试者，11名后足排列不齐的无症状者和10名后足排列正常的无症状者。
开具矫形器并佩戴6周。在4个不同日期进行平衡测试，每个受试者在两种矫形器条件下均接受测试。通过单腿站立的三次10秒闭眼试验、平台移动的一次20秒闭眼双侧站立试验以及平台和周围环境移动的一次20秒睁眼双侧站立试验来测量姿势控制。
单腿站立的摆动速度（度/秒）和双侧站立的平衡评分。
无论组别如何，与不佩戴矫形器相比，佩戴矫形器进行单腿测试时姿势摆动测量值显著降低。与初始周的测量值相比，矫形器干预在第2周、第4周和第6周显著改善了排列不齐组的双侧站立平衡评分。排列不齐组在初始周佩戴矫形器时的平衡评分显著低于（更差）初始周佩戴矫形器的对照组；然而，在第2周、第4周或第6周的测量中未重复出现这些结果。
矫形器的应用降低了单腿站立的摆动速度，在去除视觉反馈时，无论组别如何均改善了姿势稳定性。在双侧站立期间，与对照组相比，排列不齐组无论是否佩戴矫形器，姿势稳定性最初都较差；然而，到第2周时有所改善，并在其余测试期间持续改善。临床上，矫形器的应用似乎可改善后足排列不齐者的姿势控制，尤其是在去除视觉时。
