Biomechanical and electromyographic evaluation of ankle foot orthosis and dynamic ankle foot orthosis in spastic cerebral palsy
Biomechanical and electromyographic evaluation of ankle foot orthosis and dynamic ankle foot orthosis in spastic cerebral palsy
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DOI：
10.1016/j.gaitpost.2004.09.011
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发表时间：
2005-11-01
期刊：
影响因子：
2.4
通讯作者：
Lu, WW
中科院分区：
文献类型：
--
作者：
Lam, WK;Leong, JCY;Lu, WW
本研究旨在评估传统踝足矫形器（AFO）与动力踝足矫形器（DAFO）对痉挛型脑性瘫痪（CP）患者步态的生物力学和肌电图影响。对13例动力性马蹄足患者进行了肌电图运动分析。AFO和DAFO都提供了更长的步幅，允许初始接触的预定位，并成功地控制了挥杆阶段的过度跖屈。EMG信号的中位频率（MF）表明，与导致疲劳的对照组相比，在患者的下肢中发现了极高的放电。DAFO允许的总踝关节活动范围明显大于AFO。然而，AFO显著降低MF，而DAFO则没有。当佩戴AFO时，MF降低，表明步行耐力有所改善。DAFO对踝关节运动的限制较小，可避免肌肉萎缩，提高矫形器的顺应性。(c)2004 Elsevier B.V.保留所有权利。
This study evaluated the biomechanical and electromyographic effects of conventional ankle foot orthoses (AFOs) and dynamic ankle foot orthoses (DAFOs) on gait in patients with spastic cerebral palsy (CP). Thirteen patients with dynamic equinus underwent motion analysis with electromyography. Both AFOs and DAFOs provided longer stride length, permitted pre-positioning for initial contact, and successfully controlled the excessive plantarflexion during the swing phase. Median frequency (MF) of EMG signal indicated that extremely high firing was found in the patient's lower limbs compared to controls that resulted in tiredness. The DAFOs allowed a significantly larger total ankle range of motion than the AFOs. However, AFOs significantly reduced the MF while DAFOs did not. The reduced MF seen when wearing AFOs suggested an improvement of walking endurance. The DAFO had the advantage of less restriction on ankle movement, which avoids muscular atrophy and improves orthotic compliance. (c) 2004 Elsevier B.V. All rights reserved.