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Reliability of position sense testing assessed with a fully automated system
J Lönn1, A G Crenshaw, M Djupsjöbacka
1Centre for Musculoskeletal Research, National Institute for Working Life, Box 7654, S-907 13 Umeâ, Sweden.
Clinical Physiology (Oxford, England)
|January 29, 2000
Summary
Position sense tests show moderate reliability for evaluating joint injury, with intra-class correlations ranging from 0.40 to 0.61. These findings suggest caution when using repositioning tests for clinical proprioceptive function assessment.
Area of Science:
- Biomechanics
- Neuroscience
- Orthopedics
Background:
- Joint injury evaluation increasingly utilizes position sense testing.
- Proprioception, or position sense, is crucial for joint stability and function.
- Assessing proprioceptive deficits is vital for rehabilitation and injury prevention.
Purpose of the Study:
- To investigate the inter-day reliability of four distinct position sense tests.
- To evaluate the accuracy and consistency of automated position sense measurement systems.
- To determine the clinical utility of repositioning tests for detecting proprioceptive alterations.
Main Methods:
- Four position sense tests were employed: passive presentation/active replication, passive/passive, semi-passive/semi-passive, and active/active.
- A fully automated system measured the absolute difference between target and replicated joint positions.
- Ten healthy subjects performed tests twice, 3-4 days apart, involving horizontal abduction and adduction movements.
Main Results:
- No significant differences in absolute error were found between testing days or procedures (two-way ANOVA).
- Intra-class correlations (ICC) for test-retest reliability were moderate, ranging from 0.40 to 0.61.
- The study demonstrated limited reliability across the evaluated position sense testing methods.
Conclusions:
- Repositioning tests exhibit moderate inter-day reliability, potentially limiting their sensitivity in clinical settings.
- The findings suggest that current position sense testing methods may not be sufficiently precise for reliably detecting subtle proprioceptive changes.
- Clinical application of these specific repositioning tests for evaluating joint injury and proprioceptive function should be approached with caution.