A unilateral shear extended sacral dysfunction shows which pattern on the dysfunctional side for sacral base and ILA?

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Multiple Choice

A unilateral shear extended sacral dysfunction shows which pattern on the dysfunctional side for sacral base and ILA?

Explanation:
In unilateral sacral dysfunction patterns, the depth of the sacral base and the ILA on the affected side reflects the direction of sacral tilt. For an extended unilateral shear, the sacral base on the dysfunctional side tilts posteriorly, which makes the base feel shallower to palpation. The same side’s ILA sulcus becomes deeper because the posterior aspect of the sacrum presses into the ilium, deepening that sulcus. So the hallmark on the dysfunctional side is a shallow sacral base with a deep ILA sulcus.

In unilateral sacral dysfunction patterns, the depth of the sacral base and the ILA on the affected side reflects the direction of sacral tilt. For an extended unilateral shear, the sacral base on the dysfunctional side tilts posteriorly, which makes the base feel shallower to palpation. The same side’s ILA sulcus becomes deeper because the posterior aspect of the sacrum presses into the ilium, deepening that sulcus. So the hallmark on the dysfunctional side is a shallow sacral base with a deep ILA sulcus.

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