Jackson Lyle T, Crisler Matthew C, Tanner Stephanie L, Brooks Johnell O, Jeray Kyle J
1 Greenville Health System, SC, USA.
2 Clemson University, SC, USA.
Hand (N Y). 2017 Nov;12(6):597-605. doi: 10.1177/1558944716675133. Epub 2016 Oct 19.
A person's ability to safely drive while immobilized is not well defined. Steering ability with a spinner knob during immobilization is unknown. The goal of this study is to further clarify the effect of immobilization on steering reaction time and accuracy with and without a steering wheel spinner knob.
Twenty participants were enrolled in this crossover trial using a driving simulator with an automatic transmission. Five conditions were tested in a counterbalanced order. Steering reaction time and accuracy (number of errors on a dynamic steering task at 2 difficulty levels) were measured. Participants were allowed to steer with the immobilized extremity.
No significant differences in reaction time were observed between any conditions. Both immobilized conditions and difficulty level of the steering task led to diminished accuracy compared with controls, resulting in significantly more errors. The use of a spinner knob significantly improved the accuracy for the condition with the sugar-tong splint during the easier steering task, but this improvement was not observed in the harder steering task. There were no differences between conditions based on gender or observed use of the immobilized arm.
Immobilization had a negative effect on steering accuracy for both the wrist splint and the sugar-tong splint condition, which may negatively impact driving ability of immobilized patients. Immobilization, regardless of spinner knob use, did not significantly impact steering reaction time. The steering wheel spinner knob did not consistently improve accuracy, and further study is needed to determine its utility.
关于一个人在肢体固定时安全驾驶的能力尚无明确界定。肢体固定期间使用旋转旋钮的转向能力也不清楚。本研究的目的是进一步阐明肢体固定对有或没有方向盘旋转旋钮时转向反应时间和准确性的影响。
20名参与者参加了这项使用自动变速器驾驶模拟器的交叉试验。以平衡顺序测试了五种情况。测量了转向反应时间和准确性（在2个难度级别下动态转向任务中的错误数量）。允许参与者用固定的肢体进行转向。
在任何情况下均未观察到反应时间有显著差异。与对照组相比，肢体固定情况和转向任务的难度级别均导致准确性降低，从而导致更多错误。在较简单的转向任务中，使用旋转旋钮显著提高了使用糖钳夹板情况下的准确性，但在较难的转向任务中未观察到这种提高。基于性别或观察到的固定手臂的使用情况，各情况之间没有差异。
对于手腕夹板和糖钳夹板情况，肢体固定对转向准确性有负面影响，这可能会对肢体固定患者的驾驶能力产生负面影响。无论是否使用旋转旋钮，肢体固定均未显著影响转向反应时间。方向盘旋转旋钮并不能始终提高准确性，需要进一步研究以确定其效用。
