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Rheumatology Advance Access published online on February 22, 2005
Rheumatology, doi:10.1093/rheumatology/keh568
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© British Society for Rheumatology 2005; all rights reserved
Received September 2, 2004
Accepted January 11, 2005

Concise Report

A novel device for the measurement of proprioception in the hand

A. S. Wycherley 1, P. S. Helliwell 1*, and H. A. Bird 1

1 Academic Unit of Musculoskeletal and Rehabilitation Medicine, University of Leeds, Leeds, UK

* To whom correspondence should be addressed.
P. S. Helliwell, E-mail: p.helliwell{at}leeds.ac.uk


  Abstract

Background. Together with visual information, awareness of limb position and movement is essential for limb coordination. A proprioceptive deficit has been demonstrated in a number of rheumatological disorders. There is a lack of a portable device for measuring hand proprioception in the field.

Methods. A compact portable device for measuring joint position sense in the metacarpophalangeal joint of the index finger of either hand was constructed. This device was manually operated and required the subject to match the position of the hidden finger with a surface-mounted silhouette. Reliability studies were performed over three consecutive days in 12 normal volunteers.

Results. Intrasubject variability [95% confidence interval (CI)] was 0.86° (0.04-1.76) between days 1 and 2, and 1.23° (1.04-3.50) between days 2 and 3. The intraclass correlation coefficient (95% CI) between all 3 days was 0.92 (0.85-0.96). Average proprioceptive error (95% CI) in the sample population was 5.72° (1.23-10.2) over the 3 days. This value was 5.94°, 5.79° and 5.42° on days 1, 2 and 3, respectively. No difference was found between sexes but dominant hands gave smaller errors (mean dominant error 5.11°, mean non-dominant error 6.35°; t = -3.4, P = 0.002).

Conclusions. This report describes a new portable device for measuring proprioception in the hand. Reproducibility was shown to be good on an individual and group basis. These results are promising and warrant larger age- and sex-related studies. The ease and portability of the device make it ideal for use in epidemiological studies of rheumatological disorders involving the hands, including joint hypermobility.

Keywords: Proprioception; Joint position sense; Kinaesthesia; Measurement; Validation.
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