van Vliet D, Novak C B, Mackinnon S E
Faculty of Medicine, University of Toronto, Ontario, Canada.
Ann Plast Surg. 1993 Oct;31(4):335-9. doi: 10.1097/00000637-199310000-00010.
Semmes-Weinstein monofilaments (SWMs) are standard measures used to assess hand sensibility. The purpose of this study was to evaluate the effect of varying contact time on the measurement of cutaneous pressure thresholds. Thirty-two healthy adult subjects were evaluated with a 20-filament SWM test kit. The index finger of the dominant hand was assessed with the following four distinct monofilament contact times: 0.5, 1.5, 5.0, and 30.0 seconds. With increased duration of monofilament contact time, there was a significant increase in the cutaneous pressure threshold measures (p < 0.05). That is, to perceive a stimulus for a longer period of time, a heavier filament was required. With increasing age, significantly higher pressure thresholds were obtained particularly for the sustained contact time (> 5.0 seconds). Pressure thresholds vary significantly with SWM contact time, emphasizing the importance of maintaining a consistent SWM application protocol.
Semmes-Weinstein单丝（SWMs）是用于评估手部感觉功能的标准方法。本研究的目的是评估不同接触时间对皮肤压力阈值测量的影响。使用20丝SWM测试套件对32名健康成年受试者进行评估。用以下四种不同的单丝接触时间评估优势手的食指：0.5、1.5、5.0和30.0秒。随着单丝接触时间的延长，皮肤压力阈值测量值显著增加（p<0.05）。也就是说，要在更长时间内感知刺激，需要更粗的单丝。随着年龄的增长，尤其是在持续接触时间（>5.0秒）时，压力阈值显著升高。压力阈值随SWM接触时间的变化显著，这强调了保持一致的SWM应用方案的重要性。
