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(English captions by Andrea Matsumoto from the University of Michigan)

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The standing flexion test assesses for lumbosacral,[br]sacroiliac, or pelvic dysfunction.

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The examiner stands behind the patient and[br]places hands on the iliac crests with thumbs

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over the inferior notch of the posterior superior[br]iliac spine.

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The patient slowly flexes forward.

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If the posterior superior iliac spine moves[br]more cephalad on one side, the test is positive,

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indicating dysfunction.