Department of Assistive Technology, Research Institute, National Rehabilitation Center for Persons with Disabilities , Tokorozawa, Japan.
Department of Rehabilitation Engineering, Research Institute, National Rehabilitation Center for Persons with Disabilities , Tokorozawa, Japan.
Assist Technol. 2020 Nov 1;32(6):287-293. doi: 10.1080/10400435.2018.1547333. Epub 2018 Nov 30.
The shearing force acting upon the contacting surface of the buttocks while seated in a wheelchair has been linked to the development of pressure ulcers. However, the actual causative factors have not been examined in detail. In an attempt to clarify the nature of this problem, we developed a specific measurement system. In preparation for future clinical applications, we conducted preliminary testing in non-disabled individuals. As a result, we were able to discover a number of issues related to this system and our measurement methods. Although we only evaluated a limited number of typical sitting postures, we were able to record the buttocks shearing force reference values for non-disabled individuals. Our results suggest that regardless of posture, a backward-directed shearing force occurs below the ischial tuberosity in non-disabled individuals in seated positions. This force seemed to increase as the individual leaned forward. Meanwhile, tilting the torso to one side seemed to be associated with an increase in the shearing force working in the opposite direction. We hope that these findings can be utilized for reference purposes in future research among non-disabled individuals.
当坐在轮椅上时，臀部接触面上的剪切力与压力性溃疡的发生有关。然而，实际的致病因素尚未详细研究。为了阐明这个问题的本质，我们开发了一种特定的测量系统。为了将来的临床应用做准备，我们在非残疾个体中进行了初步测试。结果，我们发现了与该系统和我们的测量方法相关的一些问题。尽管我们只评估了有限数量的典型坐姿，但我们能够为非残疾个体记录臀部剪切力参考值。我们的结果表明，无论姿势如何，非残疾个体在坐姿时坐骨结节下方都会产生向后的剪切力。当个体向前倾斜时，这种力似乎会增加。同时，躯干向一侧倾斜似乎与沿相反方向作用的剪切力增加有关。我们希望这些发现能为未来非残疾个体的研究提供参考。
