Balsdon Megan, Dombroski Colin, Bushey Kristen, Jenkyn Thomas R
1 Faculty of Engineering, Western University, London, ON, Canada.
2 SoleScience Inc., London, ON, Canada.
Prosthet Orthot Int. 2019 Jun;43(3):331-338. doi: 10.1177/0309364619825607. Epub 2019 Feb 14.
Foot orthoses have proven to be effective for conservative management of various pathologies. Pathologies of the lower limb can be caused by abnormal biomechanics such as irregular foot structure and alignment, leading to inadequate support.
To compare biomechanical effects of different foot orthoses on the medial longitudinal arch during dynamic gait using skeletal kinematics.
This study follows a prospective, cross-sectional study design.
The medial longitudinal arch angle was measured for 12 participants among three groups: pes planus, pes cavus and normal arch. Five conditions were compared: three orthotic devices (hard custom foot orthosis, soft custom foot orthosis and off-the-shelf Barefoot Science©), barefoot and shod. An innovative method, markerless fluoroscopic radiostereometric analysis, was used to measure the medial longitudinal arch angle.
Mean medial longitudinal arch angles for both custom foot orthosis conditions were significantly different from the barefoot and shod conditions ( p < 0.05). There was no significant difference between the off-the-shelf device and the barefoot or shod conditions ( p > 0.05). In addition, the differences between hard and soft custom foot orthoses were not statistically significant. All foot types showed a medial longitudinal arch angle decrease with both the hard and soft custom foot orthoses.
These results suggest that custom foot orthoses can reduce motion of the medial longitudinal arch for a range of foot types during dynamic gait.
Therapeutic study, Level 2.
Custom foot orthoses support and alter the position of the foot during weightbearing. The goal is to eliminate compensation of the foot for a structural deformity or malalignment and redistribute abnormal plantar pressures. By optimizing the position of the foot, the medial longitudinal arch (MLA) will also change and quantifying this change is of interest to clinicians.
足部矫形器已被证明对各种病症的保守治疗有效。下肢病症可能由异常生物力学引起，如足部结构和排列不规则，导致支撑不足。
使用骨骼运动学比较不同足部矫形器在动态步态中对内侧纵弓的生物力学影响。
本研究采用前瞻性横断面研究设计。
在三组参与者中测量内侧纵弓角度：扁平足、高弓足和正常足弓。比较了五种情况：三种矫形装置（硬定制足部矫形器、软定制足部矫形器和现成的Barefoot Science©）、赤脚和穿鞋。采用一种创新方法，即无标记荧光透视放射立体分析，来测量内侧纵弓角度。
两种定制足部矫形器情况下的平均内侧纵弓角度与赤脚和穿鞋情况均有显著差异（p < 0.05）。现成装置与赤脚或穿鞋情况之间无显著差异（p > 0.05）。此外，硬定制和软定制足部矫形器之间的差异无统计学意义。所有足型在使用硬定制和软定制足部矫形器时内侧纵弓角度均减小。
这些结果表明，定制足部矫形器可在动态步态中减少一系列足型的内侧纵弓运动。
治疗性研究，2级。
定制足部矫形器在负重时支撑并改变足部位置。目标是消除足部对结构畸形或排列不齐的代偿，并重新分布异常的足底压力。通过优化足部位置，内侧纵弓（MLA）也会发生变化，量化这种变化对临床医生很有意义。
Zotero 插件