What indicates a positive result in the Standing Flexion Test?

A positive result in the Standing Flexion Test is indicated when one posterior superior iliac spine (PSIS) moves farther cranially than the other. This occurs when there is an asymmetry in the movement of the pelvis during flexion, suggesting that there may be an underlying dysfunction or restriction in the sacroiliac joint or the lumbar spine on the side of the PSIS that moves less.

When a person bends forward during the test, normal mechanics would expect both PSIS to move symmetrically. However, if one PSIS demonstrates a greater elevation, it implies that there is a relative restriction or lack of movement on the opposite side. This finding can be useful in clinical assessments when evaluating pelvic alignment, movement dysfunction, or potential sources of pain.

The other response options describe movements that do not indicate a positive result for this specific test. For instance, the equal movement of both PSIS suggests normal function without any asymmetries, while the pelvis elevating contralaterally doesn't directly reflect the specific criteria for a positive Standing Flexion Test. Additionally, a lower leg rising off the table is not a recognized outcome of this test and does not provide information about the functionality or alignment of the pelvic structures.