Park Eun Sook, Kim Hyun Woo, Park Chang Il, Rha Dong-wook, Park Chan Woo
Department and Research Institute of Rehabilitation Medicine, Yonsei University College of Medicine, Seoul, South Korea.
Arch Phys Med Rehabil. 2006 May;87(5):703-9. doi: 10.1016/j.apmr.2005.12.038.
To identify characteristics of foot pressure distribution in different foot deformities using a computerized insole sensor system, and to identify changes in these parameters after corrective surgery in children with spastic cerebral palsy (CP).
Before-after trial.
University hospital.
Sixty-seven limbs of 44 children with spastic CP were assessed (35 equinus, 17 equinovarus, 15 equinovalgus).
Orthopedic surgery for foot deformities.
Parameters of foot contact pattern, pressure-time integral (PTI), and center of pressure (COP) trajectories were assessed before and at a minimum of 6 months postsurgery, using the F-scan system.
Prior to surgery, the medial midfoot relative impulse, which is PTI normalized by a percentage of the entire foot, differed significantly between foot deformity groups. Relative impulse was high on the lateral column of the foot in the equinovarus group and on the medial column of the foot in the equinovalgus group. Center of pressure index (COPI) and coronal index reflecting the asymmetry of the medial and lateral columns of the foot differed significantly between the equinovalgus and equinovarus groups. After surgery, significant changes occurred in foot contact patterns, including total contact area, contact length, contact width of hindfoot, and the relative impulse of specific areas of the foot. In addition, there were significant changes in the parameters of COP, such as anteroposterior displacement, slope, and velocity.
In dynamic foot pressure measurements using a computerized insole sensor system, the parameters reflecting medial or lateral changes in weight bearing, such as COPI and coronal index, appear to be useful for evaluating abnormalities and improvements after intervention in the frontal plane, such as varus and valgus. Additionally, assessment of parameters in foot contact patterns, PTIs, and COP path trajectories appears to be helpful in evaluating outcomes after corrective surgery.
使用计算机化鞋垫传感器系统识别不同足部畸形中足压力分布的特征，并识别痉挛性脑瘫（CP）患儿矫正手术后这些参数的变化。
前后试验。
大学医院。
评估了44例痉挛性CP患儿的67条肢体（35例马蹄足、17例马蹄内翻足、15例马蹄外翻足）。
足部畸形的骨科手术。
使用F-scan系统在手术前和术后至少6个月评估足部接触模式、压力-时间积分（PTI）和压力中心（COP）轨迹的参数。
手术前，足部畸形组之间经整个足部百分比标准化的内侧中足相对冲量存在显著差异。马蹄内翻足组足部外侧柱的相对冲量较高，马蹄外翻足组足部内侧柱的相对冲量较高。反映足部内侧和外侧柱不对称性的压力中心指数（COPI）和冠状指数在马蹄外翻足组和马蹄内翻足组之间存在显著差异。手术后，足部接触模式发生了显著变化，包括总接触面积、接触长度、后足接触宽度以及足部特定区域的相对冲量。此外，COP的参数也有显著变化，如前后位移、斜率和速度。
在使用计算机化鞋垫传感器系统进行动态足压力测量时，反映负重内侧或外侧变化的参数，如COPI和冠状指数，似乎有助于评估额面内干预（如内翻和外翻）后的异常情况和改善情况。此外，评估足部接触模式、PTI和COP路径轨迹中的参数似乎有助于评估矫正手术后的结果。
