The reliability of knee joint position testing using electrogoniometryReport as inadecuate




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BMC Musculoskeletal Disorders

, 9:6

First Online: 22 January 2008Received: 22 June 2007Accepted: 22 January 2008

Abstract

BackgroundThe current investigation examined the inter- and intra-tester reliability of knee joint angle measurements using a flexible Penny and Giles Biometric electrogoniometer. The clinical utility of electrogoniometry was also addressed.

MethodsThe first study examined the inter- and intra-tester reliability of measurements of knee joint angles in supine, sitting and standing in 35 healthy adults. The second study evaluated inter-tester and intra-tester reliability of knee joint angle measurements in standing and after walking 10 metres in 20 healthy adults, using an enhanced measurement protocol with a more detailed electrogoniometer attachment procedure. Both inter-tester reliability studies involved two testers.

ResultsIn the first study, inter-tester reliability ICC2,10 ranged from 0.58–0.71 in supine, 0.68–0.79 in sitting and 0.57–0.80 in standing. The standard error of measurement between testers was less than 3.55° and the limits of agreement ranged from -12.51° to 12.21°. Reliability coefficients for intra-tester reliability ICC3,10 ranged from 0.75–0.76 in supine, 0.86–0.87 in sitting and 0.87–0.88 in standing. The standard error of measurement for repeated measures by the same tester was less than 1.7° and the limits of agreement ranged from -8.13° to 7.90°. The second study showed that using a more detailed electrogoniometer attachment protocol reduced the error of measurement between testers to 0.5°.

ConclusionUsing a standardised protocol, reliable measures of knee joint angles can be gained in standing, supine and sitting by using a flexible goniometer.

Electronic supplementary materialThe online version of this article doi:10.1186-1471-2474-9-6 contains supplementary material, which is available to authorized users.

Pagamas Piriyaprasarth, Meg E Morris, Adele Winter and Andrea E Bialocerkowski contributed equally to this work.

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Author: Pagamas Piriyaprasarth - Meg E Morris - Adele Winter - Andrea E Bialocerkowski

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