Purpose: To assess for the sacroiliac joint or hip joint being the source of the patient's pain.
Test Position: Supine.
Performing the Test: The patient's tested leg is extended and abducted to about 30 degrees. The examiner resists abduction. Production of low back pain is a positive test and is indicative of pain originating from the sacroiliac joint.
Diagnostic Accuracy: Sensitivity: .87, Specificity: 1.0; -LR: .13 ("Pain provocation tests for the assessment of sacroiliac joint dysfunction").
Importance of Test: When this test is clustered, it can prove highly useful in identifying those suffering from sacroiliac joint dysfunction. Check out the Lumbar Spine/Sacroiliac home page for the cluster. This tests the sacroiliac joint, because resisted abduction activates the muscles that cross the sacroiliac joint. The forces of the muscles compress parts of the joint and produce pain.
Note: tests should only be performed by a properly trained health care practitioner.
References: Broadhurst N, Bond M. "Pain provocation tests for the assessment of sacroiliac joint dysfunction." J Spinal Disorders 1998; 11: 341-345.