Tredgett M W, Davis T R
Department of Trauma and Orthopaedics, Queen's Medical Centre, University Hospital, Nottingham, UK.
J Hand Surg Br. 2000 Aug;25(4):372-5. doi: 10.1054/jhsb.2000.0433.
This study assessed the use of rapid, repeated measurement of grip strength to detect feigned hand weakness. Normal participants, performing with maximum effort or feigning hand weakness, and patients recovering from carpal tunnel surgery were asked to grip a Jamar dynamometer alternately with each hand on ten occasions. The results showed that grip strength fatigued by an average of 23% during the test in the normal participants, 18% in participants faking weakness, and increased by 2% in the carpal tunnel decompression patients. An increase in grip strength after the first effort was found in 39% of normal participants, 52% of participants faking hand weakness and in 69% of the carpal tunnel decompression patients. These results suggest that rapid, repeated measurement of grip strength is not a reliable discriminator of true and faked hand weakness.
本研究评估了通过快速、重复测量握力来检测假性手部无力的方法。要求正常参与者尽最大努力或假装手部无力进行测试，并让正从腕管手术中恢复的患者用双手交替握住Jamar握力计，各进行十次测量。结果显示，在测试过程中，正常参与者的握力平均疲劳23%，假装无力的参与者握力平均疲劳18%，而腕管减压患者的握力则增加了2%。在首次测量后握力增加的情况中，正常参与者占39%，假装手部无力的参与者占52%，腕管减压患者占69%。这些结果表明，快速、重复测量握力并不能可靠地区分真正的和假装的手部无力。
