Bharthi Rosh, Sukinik Joseph R, Hemler Sarah L, Beschorner Kurt E
Department of Bioengineering, University of Pittsburgh, 301 Schenley Place, 4420 Bayard St., Pittsburgh, PA 15213, United States.
Footwear Sci. 2022;14(3):219-228. doi: 10.1080/19424280.2022.2124319. Epub 2022 Sep 29.
Worn shoes contribute to injuries caused by slip-and-fall accidents. The peak required coefficient of friction (RCOF) has been associated with tread wear rate. However, the temporal relationship between RCOF and shoe wear is unknown. The purpose of this study was to determine whether the contact region at the time of peak RCOF is consistent with the region of shoe wear. The shoe contact region at peak RCOF was imaged by frustrated total internal reflection. Images of worn tread after months of use were captured. The worn tread region was more posterior than the contact region at RCOF and did not correlate with the contact region at the time of RCOF. The contact regions observed during earlier stance (within 83 ms of heel contact) were more consistent with the worn region, suggesting that RCOF may not directly cause tread wear. These results serve to motivate future studies to identify early-stance gait parameters associated with tread wear development.
磨损的鞋子会导致滑倒事故造成的伤害。所需的峰值摩擦系数（RCOF）与胎面磨损率有关。然而，RCOF与鞋子磨损之间的时间关系尚不清楚。本研究的目的是确定RCOF峰值时的接触区域是否与鞋子磨损区域一致。通过受挫全内反射对RCOF峰值时的鞋子接触区域进行成像。拍摄了使用数月后的磨损胎面图像。磨损的胎面区域比RCOF时的接触区域更靠后，且与RCOF时的接触区域不相关。在更早的站立阶段（足跟接触后83毫秒内）观察到的接触区域与磨损区域更一致，这表明RCOF可能不会直接导致胎面磨损。这些结果有助于推动未来的研究，以确定与胎面磨损发展相关的早期站立步态参数。
