Question:hard
Lower limit of the sacroiliac joint lies up to which level in females?
Lower limit of the sacroiliac joint lies up to which level in females?
Show Hint
The female auricular surface is short - think roughly two to two and a half segments.
Updated On: Jun 24, 2026
- 1 to 1 1/2
- 2 to 2 1/2
- 3 to 3 1/2
- 4 to 4 1/2
Show Solution
The Correct Option is B
Solution and Explanation
Step 1: Recall that the sacroiliac articulation runs along the ear-shaped (auricular) facet on the side of the sacrum, and its downward reach is measured against the sacral vertebral segments.
Step 2: For the female pelvis the surface is comparatively short, so the inferior border of the joint reaches only about the 2 to 2 1/2 sacral segment mark.
Step 3: Comparing the sexes, the female auricular surface is smaller, giving a lower limit higher up than in males. This sex difference is a tested anatomy point.
Step 4: Selecting the level that corresponds to roughly two and a half segments gives option (b).
\[\boxed{2 \text{ to } 2\tfrac{1}{2}}\]
Step 2: For the female pelvis the surface is comparatively short, so the inferior border of the joint reaches only about the 2 to 2 1/2 sacral segment mark.
Step 3: Comparing the sexes, the female auricular surface is smaller, giving a lower limit higher up than in males. This sex difference is a tested anatomy point.
Step 4: Selecting the level that corresponds to roughly two and a half segments gives option (b).
\[\boxed{2 \text{ to } 2\tfrac{1}{2}}\]
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