Performing the Test: Have the patient use one finger to localize their pain. A positive test is when the patient twice identifies the painful region as within 1 cm of inferomedial to the PSIS.
Diagnostic Accuracy: Unknown.
Importance of Test: Due to the attachment of the long and short posterior SI ligaments to the PSIS, pain is often localized to this region with sacroiliac dysfunction, because the asymmetrical alignment of the pelvic girdle stresses the ligaments that support it.
Note: tests should only be performed by a properly trained health care practitioner.