Department of Physical Therapy, College of Medical Sciences, Jeonju University, Jeonju, South Korea.
Prosthet Orthot Int. 2022 Aug 1;46(4):362-367. doi: 10.1097/PXR.0000000000000119. Epub 2022 Mar 23.
Most previous studies focused on the possible relationship between hallux valgus deformity and biomechanical characteristics in the foot and lower leg. Very few investigated the association of pelvic kinematics and hallux valgus during gait according to various foot-toe orthoses for hallux valgus.
To investigate the effect of soft or hard foot-toe orthoses on pelvic kinematics in individuals with hallux valgus deformity during gait.
This study has a repeated measures design.
Three-dimensional range of motion in the pelvic segment was collected from 22 individuals (18 women and 4 men) aged 21 to 52 years (mean 31.7 years, SD 8.7) with hallux valgus. All participants exhibited a hallux valgus angle of more than 20 degree in both feet. A motion analysis system with eight infrared cameras was used to obtain pelvic kinematic data in the hard plastic orthosis, soft silicone orthosis, and without foot-toe orthosis conditions during gait. The two types of hallux valgus orthoses used in this experiment were commercially available products. The participants performed 8-10 walking trials. The walkway length was 6 m. Repeated-measures analysis of variance was used to determine the effects of each orthosis condition on the pelvic kinematic values.
The hard plastic orthosis condition was associated with decreased pelvic motion compared with the soft-type orthosis and no orthosis conditions for depression (F (2,42) = 7.329, P = 0.004), external rotation (F (2,42) = 4.367, P = 0.027), and overall transverse motion (F (2,42) = 4.897, P = 0.019) of the pelvic segment during gait. There were no significant differences in other pelvic motion variables between the without foot-toe orthosis and soft silicone orthosis conditions ( P > 0.05).
The results of this study suggest that the hard-type foot-toe orthosis for hallux valgus reduced pelvic motion and contributed to preventing excessive pelvic movement during gait.
大多数之前的研究都集中在拇外翻畸形与足部和小腿的生物力学特征之间可能存在的关系上。很少有研究根据不同的拇外翻足趾矫正器来研究在步态中骨盆运动与拇外翻之间的关系。
探讨软式或硬式足趾矫正器对拇外翻患者步态中骨盆运动的影响。
本研究采用重复测量设计。
从 22 名年龄在 21 至 52 岁（平均 31.7 岁，标准差 8.7）的拇外翻患者中收集 22 名（18 名女性和 4 名男性）的骨盆节段三维运动范围。所有参与者的双脚都有大于 20 度的拇外翻角。使用具有 8 个红外摄像头的运动分析系统在硬塑料矫形器、软硅胶矫形器和无足趾矫形器条件下获得步态中的骨盆运动学数据。本实验中使用的两种类型的拇外翻矫形器均为市售产品。参与者进行了 8-10 次步行试验。步行道长度为 6 米。采用重复测量方差分析确定每种矫形器条件对骨盆运动值的影响。
与软式矫形器和无足趾矫形器相比，硬塑料矫形器条件下骨盆运动的降低与骨盆的凹陷（F（2,42）=7.329，P=0.004）、外旋（F（2,42）=4.367，P=0.027）和整体横向运动（F（2,42）=4.897，P=0.019）有关。在没有足趾矫形器和软硅胶矫形器的情况下，其他骨盆运动变量之间没有显著差异（P>0.05）。
本研究结果表明，硬式拇外翻足趾矫正器可减少骨盆运动，有助于防止步态中骨盆过度运动。
