The diagnostic accuracy of the Kemp's test: a systematic review.

BACKGROUND The objective of this review was to evaluate the existing literature regarding the accuracy of the Kemp's test in the diagnosis of facet joint pain compared to a reference standard. METHODS Several databases were searched. All diagnostic accuracy studies comparing the Kemp's test with an acceptable reference standard were included. Included studies were scored for quality and internal validity. RESULTS Five articles met the inclusion criteria of this review. Two studies had a low risk of bias, and three had a low concern regarding applicability. Pooling of data from studies using similar methods revealed that the test's negative predictive value was the only diagnostic accuracy measure above 50% (56.8%, 59.9%). CONCLUSIONS Currently, the literature supporting the use of the Kemp's test is limited and indicates that it has poor diagnostic accuracy. It is debatable whether clinicians should continue to use this test to diagnose facet joint pain.