Hardy M, Jimenez S, Jabaley M, Horch K
St. Dominic Hand Center, Jackson, Miss.
J Hand Surg Am. 1992 Sep;17(5):838-42. doi: 10.1016/0363-5023(92)90453-v.
The Automated Tactile Tester (ATT) was used to measure threshold values for trapezoidal skin indentation (light touch), low- and high-frequency vibration (50 and 150 Hz), pinprick (sharp-dull transition point), warming (temperature awareness), and two-point discrimination in 61 patients with symptoms of median nerve compression at the wrist. We compared these data with values obtained in the same patients with manual monofilament tests, manual two-point discrimination measurements, and electrophysiologic nerve conduction studies. The ATT detected abnormal sensation in 71% of the hands tested, nerve conduction velocity was abnormal in 44% of the cases, and the manual tests indicated abnormality in 42% of the hands. The most indicative single test among those included in the present study for detecting sensory abnormality in these patients was threshold to a 50 Hz vibration administered by the ATT. We conclude that the ATT is a sensitive tool for the diagnosis and evaluation of compressive peripheral neuropathy and may allow objective documentation in a higher percent of patients than do more traditional testing methods.
使用自动触觉测试仪（ATT）对61例有腕部正中神经受压症状的患者进行梯形皮肤压痕（轻触）、低频和高频振动（50和150赫兹）、针刺（锐-钝转换点）、温热（温度觉）及两点辨别觉阈值的测量。我们将这些数据与同一患者通过手动单丝试验、手动两点辨别觉测量及电生理神经传导研究获得的值进行比较。ATT检测出71%受试手存在感觉异常，44%的病例神经传导速度异常，手动测试显示42%的手存在异常。本研究中用于检测这些患者感觉异常的最具指示性的单一测试是ATT施加的50赫兹振动阈值。我们得出结论，ATT是诊断和评估压迫性周围神经病的敏感工具，与更传统的测试方法相比，它能在更高比例的患者中实现客观记录。
