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首页> 外文期刊>Journal of prosthetics and orthotics: JPO >Comparison of Three Pediatric Prosthetic Feet During Functional Activities
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Comparison of Three Pediatric Prosthetic Feet During Functional Activities

机译：功能活动期间三个小儿假脚的比较

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Unilateral below-knee amputees, doing well with an energy-storing prosthetic foot, expressed interest in doing more and received a multiaxial dynamic foot, with follow-up subjective reports of significant improvements in high-performance activities. The purpose of this study was to determine if the authors could objectively measure improved function in high-performance activities in active children and adolescents wearing multiaxial dynamic prosthetic feet, compared with an energy-storing foot. Sixteen children and adolescents with unilateral below knee amputations (11 Syme, 5 transtibial) tested three prosthetic feet. An energy-storing foot represented by the Seattle Lightfoot~R (Seattle Limb Systems, Poulsbo, WA) and two multiaxial dynamic prosthetic feet represented by the College Park TruStep~R (College Park Industries, Eraser, MI) and Otto Bock Luxon Max~R (Otto Bock Health Care, Minneapolis, MN) were tested in this study. (Three of the 16 subjects were fit with a College Park TruPer~R foot, instead of a College Park TruStep~R foot, secondary to foot size limitations. The two feet are collectively referred to as the College Park TruStep~R foot throughout this study.) Subjects completed six functional tests: cutting drill, sprinting, vertical jump, standing long jump, oxygen cost while on a treadmill, and computerized gait analysis. Fitting by a certified prosthetist and testing of the three prosthetic feet were done in varied order for each subject within 1 week. The study was double blinded so that neither the subjects nor experimenters had knowledge of the prosthetic foot identity during data collection. Results indicated no significant differences among the three prosthetic feet for cutting drill time, sprinting time, vertical jump height, long jump distance, or oxygen cost on the treadmill (mL O_2/kg/meter). Computerized gait analysis showed no significant differences among the three feet for velocity, cadence, stride length, or prosthetic side step length. The College Park TruStep~R had significantly greater dorsiflexion and plantarflexion motion and "greater peak power generation in late stance during walking. Subjectively, five subjects preferred the Seattle Lightfoot~R, six preferred the College Park TruStep~R foot, and five preferred the Otto Bock Luxon Max~R foot. The three feet tested in this study were comparable according to objective assessment during high-performance functional activities. The authors cannot explain the discrepancy between the subjective enthusiasm expressed in clinic with one of the multiaxial dynamic feet, and the lack of significant differences among the three prosthetic feet on objective testing. Individual subjective preference might be the determining factor in pediatric foot selection.
机译：单侧膝下截肢者对蓄能假肢脚表现良好，表示有兴趣做更多事，并获得了多轴动力足，后续的主观报告表明，高性能活动得到了显着改善。这项研究的目的是确定作者是否能够客观地衡量与多能脚相比，在运动中的儿童和青少年中使用多轴动态假肢足的高性能活动中改善的功能。 16例单侧膝下截肢术的儿童和青少年（11例Syme，5例胫骨）测试了3个假脚。以西雅图Lightfoot〜R（西雅图Limb Systems，Poulsbo，WA）为代表的能量储存脚和以College Park TruStep〜R（College Park Industries，Eraser，MI）和Otto Bock Luxon Max〜为代表的两个多轴动态修复脚在这项研究中对R（Otto Bock Health Care，Minneapolis，MN）进行了测试。 （在这16个受试者中，有3个适合于College Park TruPer〜R脚，而不是College Park TruStep〜R脚，这是脚尺寸的限制。这两个脚在本文中统称为College Park TruStep〜R脚研究对象。受试者完成了六个功能测试：切割钻，短跑，垂直跳跃，站立跳远，跑步机上的氧气消耗以及计算机化步态分析。在1周内，针对每个受测者，以不同的顺序进行了由合格假肢的安装和三个假足的测试。该研究是双盲的，因此受试者和实验者在数据收集过程中都不了解假足的身份。结果表明，三个假肢脚在切割钻机时间，冲刺时间，垂直跳高，长跳距离或跑步机上的氧气成本（mL O_2 / kg /米）方面无显着差异。电脑步态分析显示，三只脚的速度，节奏，步幅长度或假肢侧步长度无显着差异。 College Park TruStep〜R具有明显更大的背屈和plant屈运动，并且“步行时后期姿势中的峰值发电量更大。主观上，五名受试者更喜欢Seattle Lightfoot〜R，六名受试者更喜欢College Park TruStep〜R脚，五名更喜欢Otto Bock Luxon Max〜R脚：根据高性能运动活动中的客观评估，本研究中测试的三只脚具有可比性，作者无法解释多轴动态脚之一在临床上表现出的主观热情与在客观测试中三个假脚之间没有显着差异，个人主观偏爱可能是小儿脚选择的决定因素。

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