Reliability of two-point discrimination test in carpal tunnel syndrome patients

Physiotherapy Theory and Practice
Tomasz Wolny, Paweł Linek

Abstract

To evaluate the reliability (intra and inter) of two-point discrimination (2PD) test in carpal tunnel syndrome (CTS) patients. Eighty-six adults with unilateral right hand CTS. Two examiners performed measurements of 2PD sensation (using Dellon discriminator) on the first three fingers on both hands. The first examiner performed three series of measurements at 1-minute intervals. After 7 days, measurements were repeated by the same examiner (intra-rater). For inter-rater reliability, the examination (by second examiner) was also repeated after 7 days. For the first measurement, inter-rater reliability (ICC2,1) at the affected site ranged from 0.96 to 0.97; values at the non-affected site ranged from 0.79 to 0.89. Analysis of the averages of two measurements (ICC2,2) yielded values at the affected site of 0.98; values at the non-affected site ranged from 0.92 to 0.94. The average of two measurements reduces the smallest detectable difference (SDD) value < 1 mm in all cases. Intra-rater reliability was at least good for all tested fingers for the first measurement, but to record SDD < 1 mm it is necessary to use an average of the first two measurements. The execution of two repeated measurements provides adequate reliability in m...Continue Reading

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Citations

Oct 23, 2020·HSS Journal : the Musculoskeletal Journal of Hospital for Special Surgery·Lauren E WesselDuretti T Fufa
Apr 16, 2021·Hand : Official Journal of the American Association for Hand Surgery·Hossein Ali AbdolrazaghiMahin Ahmadi Pishkuhi

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