Objective: To compare the reliability of measurements of hip motions obtained with two instruments, an electronic inclinometer and a two-arm goniometer, and to investigate whether the two instruments, and different body positions, produce the same measurement data. Methods: Maximal active and passive hip movements were measured simultaneously with both instruments, in nine subjects during 10 consecutive measurements at short intervals. Results: Intra-observer variability was lower with the inclinometer in measurements of passive hip rotations. The two instruments showed equal intra-observer variability for hip movements in general. The inclinometer showed lower inter-observer variability in the measurements of active internal relation. More rotational movement was measured with the two-arm goniometer; more extension and flexion with the inclinometer. Also, more rotational movement was found in the prone position compared to silting and supine positions. Conclusions: The inclinometer is more reliable in measurements of hip rotation. For hip movements in general the two-arm goniometer is just as accurate when used by only one observer. The two instruments, and some positions, are not interchangeable during consecutive measurements.
CITATION STYLE
Bierma-Zeinstra, S. M. A., Bohnen, A. M., Ramlal, R., Ridderikhoff, J., Verhaar, J. A. N., & Prins, A. (1998). Comparison between two devices for measuring hip joint motions. Clinical Rehabilitation, 12(6), 497–505. https://doi.org/10.1191/026921598677459668
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