Division of Orthopedic Rheumatology, Friedrich-Alexander-University of Erlangen-Nuremberg, Erlangen, Germany.
Int Orthop. 2012 Jul;36(7):1411-5. doi: 10.1007/s00264-012-1501-1. Epub 2012 Feb 24.
To investigate the value of a built-in physical strain trainer for the monitoring of partial weight bearing with an ankle-foot orthosis.
12 healthy volunteers were asked to perform three trials. Plantar peak pressure values from normal gait (trial one) were defined as 100% (baseline). The following trials were performed with the Vacoped® dynamic vacuum ankle orthosis worn in a neutral position with full weight bearing (trial two) and a restriction to 10% body weight (BW) (trial three), as monitored with an integrated physical strain trainer. Peak plantar pressure values were obtained using the pedar® X system.
Peak pressure values were statistically significantly reduced wearing the Vacoped® shoe with full weight bearing for the hindfoot to 68% of the baseline (normal gait) and for the midfoot and forefoot to 83% and 60%, respectively. Limited weight bearing with 10% BW as controlled by physical strain trainer further reduced plantar peak pressure values for the hindfoot to 19%, for the midfoot to 43% of the baseline and the forefoot to 22% of the baseline.
The Vacoped® vacuum ankle orthosis significantly reduces plantar peak pressure. The integrated physical strain trainer seems unsuitable to monitor a limitation to 10% BW adequately for the total foot. The concept of controlling partial weight bearing with the hindfoot-addressing device within the orthosis seems debatable but may be useful when the hindfoot in particular must be off-loaded.
研究内置物理应变训练器在监测踝足矫形器部分负重中的价值。
12 名健康志愿者被要求进行 3 次试验。正常步态（试验一）的足底峰值压力值定义为 100%（基线）。以下试验在穿着 Vacoped®动态真空踝足矫形器的中立位下进行，完全负重（试验二）和限制为 10%体重（BW）（试验三），同时使用集成物理应变训练器进行监测。使用 pedar®X 系统获得足底峰值压力值。
穿着 Vacoped®鞋在完全负重下，后足的峰值压力值统计学上显著降低至基线（正常步态）的 68%，中足和前足分别降低至 83%和 60%。通过物理应变训练器控制的 10%BW 的有限负重进一步降低了后足的足底峰值压力值至 19%，中足至基线的 43%，前足至基线的 22%。
Vacoped®真空踝足矫形器显著降低了足底峰值压力。集成的物理应变训练器似乎不适合充分监测整个足部的 10%BW 限制。在矫形器内使用专门针对后足的装置控制部分负重的概念值得商榷，但在特别需要减轻后足负荷时可能有用。
