In a unilateral sacral shear, what side will the positive seated flexion test be on?

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Multiple Choice

In a unilateral sacral shear, what side will the positive seated flexion test be on?

Explanation:
The seated flexion test identifies the side of sacroiliac dysfunction by watching which PSIS rises more when the patient bends forward. In a unilateral sacral shear, the sacrum is displaced toward one side, so the sacral base on that side moves more with forward flexion. This makes the PSIS on that same side appear to move cephalad during the test, yielding a positive result on the side of the shear.

The seated flexion test identifies the side of sacroiliac dysfunction by watching which PSIS rises more when the patient bends forward. In a unilateral sacral shear, the sacrum is displaced toward one side, so the sacral base on that side moves more with forward flexion. This makes the PSIS on that same side appear to move cephalad during the test, yielding a positive result on the side of the shear.

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