The purpose of this study is to report a novel smartphone app technique to localise a magnetically controlled growing rod (MCGR) actuator, along with determining this novel technique accuracy compared to current tactile localisation techniques through an experimental study. Five spinal surgery fellows recorded attempts localising the MCGR magnetic actuator using a novel smartphone app technique, MAGEC Wand and magnetic disc. Three attempts per technique were performed and repeated in both the average and overweight patient models. In total, 90 separate localisation attempts were recorded. The smartphone app produced less localisation error than both the MAGEC Wand and magnetic disc. Mean difference was 0.71 cm (95% CI 1.24 to 0.18 cm p = 0.06) and 0.58 cm (95% CI 1.11 to 0.04 cm p = 0.031), respectively. Mean localisation error for the smartphone app, MAGEC Wand and magnetic disc, was 0.9 cm, 1.61 cm, 1.47 cm, respectively, for both average and overweight models combined. This novel smartphone app localisation technique is accurate. Current MAGEC Wand and magnetic disc techniques produced more localisation error than the reported tolerance of the external remote control lengthening unit in this experiment.
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机译:本研究的目的是报告一种新颖的智能手机应用技术,用于定位磁控型生长杆(MCGR)致动器,以及通过实验研究的当前触觉定位技术相比确定这种新颖的技术精度。使用新颖的智能手机应用程序技术,MAGEC魔杖和磁盘,录制了五个脊柱手术研究员的尝试尝试定位MCGR磁执行器。在平均和超重患者模型中进行每种技术的三次尝试并重复。总共记录了90次单独的本地化尝试。智能手机应用程序的定位误差较少,而不是Magec Wand和磁盘。平均差异为0.71厘米(95%CI 1.24至0.18cm p = 0.06),分别为0.58厘米(95%CI 1.11至0.04cm P = 0.031)。智能手机应用的平均定位误差,Magec魔杖和磁盘分别为0.9厘米,1.61厘米,1.47厘米,适用于平均和超重模型。这项新颖的智能手机应用本地化技术是准确的。目前的Magec魔杖和磁盘技术产生了比本实验中的外部遥控延长单元的公差更多的本地化误差。
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