Original Article
Intraexaminer Reliability of Identifying a Dysfunctional Segment in the Thoracic and Lumbar Spine

https://doi.org/10.1016/j.jmpt.2006.01.005Get rights and content

Objective

To examine the intrarater reliability of identifying a manipulable lesion in the lumbar and thoracic spine.

Methods

An experienced osteopath used dynamic and static examination to assess 12 asymptomatic subjects for signs of joint dysfunction in the thoracic and lumbar spine. The selected segment was marked with an UV invisible mark. A second examiner visualized these marks with an UV lamp and recorded them on acetates for analysis; this process was then repeated an hour later. The distance from the marks to a fixed point was measured and within-day intrarater reliability was calculated using intraclass correlation coefficients (ICCs).

Results

The ICC(1,1) for the thoracic spine was 0.70 (95% confidence interval [CI], 0.27-0.90). In the lumbar spine the ICC(1,1) was 0.96 (95% CI, 0.87-0.99).

Conclusion

This study shows that the lumbar spine joint perceived to be the joint most likely to benefit from a high-velocity low-amplitude thrust can be identified with good within-day reliability in an asymptomatic sample using a defined examination protocol. However, the reliability in identifying a joint exhibiting signs of segmental dysfunction in the thoracic spine was poor.

Section snippets

Subjects

A convenience sample of 12 asymptomatic (5 male, 7 female) subjects was recruited from the staff and students at a local university. It is often accepted that asymptomatic subjects have nonpainful dysfunctional spinal joints and, thus, subjects were selected from an asymptomatic population as they would have less baseline variability. The subjects all completed a pretest screening questionnaire to ensure they were pain-free and to determine if they had any preexisting medical history that would

Results

The data appeared normally distributed, as confirmed by testing the data using a Kolmogrov-Smirnov test (P > .05). The age of the sample (n = 12, 5 male, 7 female) was 35.7 ± 11.95 years. Body fat might be considered a hindrance to palpation, but the mean of the sample body mass index was 23.9 (range, 18-30), which indicates the sample ranged from underweight to overweight, with none in the obese category, thus limiting the problems associated with excess adipose tissue.

Reliability of

Discussion

These results show that in an asymptomatic sample using a standardized assessment protocol the within-day intrarater reliability for detecting the joint most suitable to receive a spinal manipulation was excellent for clinical measurement in the lumbar spine but moderate to poor in the thoracic spine.19 The strength of this study is that it tests the clinician's ability to identify the most dysfunctional joint in the area of the spine being examined without need for the joint to be named or

Conclusion

This study shows that a clinically experienced osteopath can identify with good reliability the lumbar spine joint perceived to be the joint most likely to benefit from a high-velocity low-amplitude thrust, in an asymptomatic sample, using a defined examination protocol. However, when using a similarly defined protocol, the same practitioner, not experienced at this particular examination method, had moderate to poor reliability in identifying a joint exhibiting signs of segmental dysfunction

References (20)

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Sources of support: No external funds were provided for this research

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